For sure, they can’t tell which one is male and which isn’t. Male vs Female. When talking about the physical structure, the first thing that comes to mind is height and weight. Compared to the Bairdi Crabs, Opilio crabs are easier to find. Research Reveals Important Differences between Male and Female Kidneys. Females have relatively smaller claws and both are the same size. 0 1 2. The larger the crab is, the easier it is to determine the gender. What is the difference between male and female king crab? The larger the crab is, the easier it is to determine the gender. But first, a little science. The average crab harvested weighs about six pounds, but they can grow much larger. NOT the White House. If you are trying to tell the gender of blue crabs by their claws, then it is fairly easy. However, the common reference of some false crabs such as King crab, Hermit crab, Porcelain crab, Horseshoe crab, and Crab Lice could be confusing with the true crabs. Today, red king crabs infrequently surpass 17 cm (7 in) in carapace width and the average male landed in the Bering Sea weighs 2.9 kg (6.4 lb). Related Questions. In terms of appearance, crabs have wide bodies with a pair of claws and uneven legs. First, take a look at the crab’s claws. As compared to lobsters, crabs also have a distinctive walk; they tend to walk sideways, whereas lobsters don’t. Males generally have narrow, thin flaps, whilst females have wider, more rounded flaps used to carry and protect eggs. King crab is sold in legs and claws. After being released by the male, the female crab is referred to as being ‘berried’ as she carries a mass of eggs around with her for months. You can secure the claws of larger crabs with rubber bands before you turn them over to tell the gender, but securing the claws may take more time and effort than it does to just catch a glimpse of their undersides. Shape The World. The male crab waves it to attract females for mating and also to challenge males to fight. DifferenceBetween.net. In the case of hermit crabs, you may have difficulty telling the gender because many hermit crabs will not come far enough out of the shell for you to identify gender markings. Female hermit crabs have two small spots called gonopores that will be visible when you look at the top of your hermit crab's back walking legs. Hope that helps. King crab legs are actually shorter than the snow crab’s, and are thicker with a spiky, tough-to-crack shell. • Males are larger and heavier than females. 0 1 2. Males are attracted to potential mates by pheromones present in the urine of females. 2.Male crabs have a smaller, more triangular, or rocket-shaped underbelly markings compared to the female crabs’ broader or dome-like marking. The difference between a female hermit crab, and male hermit crab is a male has one big claw and is really purple, and a female has a big claw too but is smaller and they are red near there claws However, the common reference of some false crabs such as King crab, Hermit crab, Porcelain crab, Horseshoe crab, and Crab Lice could be confusing with the true crabs. Difference test revealed that there was a significant difference in the proportion of male crabs between area A and area B (p = 0.01) and between A and C (p = 0.01), but not between areas A and D probably due to the limited number of crabs (valid N = 19) in the latter group. Please note: comment moderation is enabled and may delay your comment. However, this does not apply to the Opilio crab. For most of the other crab variants, however, you can just do a general inspection of their underbellies. The difference between a female hermit crab, and male hermit crab is a male has one big claw and is really purple, and a female has a big claw too but is smaller and they are red near there claws She has served as a newspaper reporter and her freelance articles have appeared in magazines such as "Horses Incorporated," "The Paisley Pony" and "Alabama Living." It’s easy to remember this distinction because, like humans, the females wear “red nail polish”. • Categorized under Nature | Difference Between Female and Male Crabs. I just wanted to correct one point in your article. Crabs belong to infraorder Brachyura while lobsters belong to the Nephropidae or Homaridae families. Females have broader tails that are somewhat heart-shaped. Puget Sound king crab (Lopholithodes mandtii Dave Cowles. It’s very easy to tell the difference at a glance when fishing for them. The lifespan of the Opilio crabs ranges between 5 to 6 years. The difference between a female hermit crab, and male hermit crab is a male has one big claw and is really purple, and a female has a big claw too but is smaller and they are red near there claws Also be sure to avoid getting pinched by his claws. • The claws are larger in males than in females. Crabs are crustaceans with a hard, rigid exoskeleton. Compared to the Bairdi Crabs, Opilio crabs are easier to find. King crab legs are actually shorter than the snow crab’s, and are thicker with a spiky, tough-to-crack shell. Blue crab males have blue claws while the females have red-tipped claws. Further, the male opilio crabs are twice the size of the female ones. Below are some very simple pictures that show you exactly how to tell the difference between male and female blue crabs just by looking at their apron. Male carapaces are usually about 7 cm (2.8 in) in width and length, with the female carapace usually close to 5.5 … This article will show you the difference between the Male and Female Mudcrab. What, then, is the difference between a crab and a lobster? In this article, the difference between male and female blue crabs will be discussed. Contents. What is a crab? If you turn the crab over you will see a flap or tail known as the abdominal flap. Crabs belong to order Decapoda and are characterized by the presence of 10 segmented legs (decopds), hard crust, sideway walking behavior, and the ability to survive on both lands and water (most crabs). I am a crab fanatic and living in Baltimore crabs are everywhere. As you can see, the Male (Top) has a “V” flap on the bottom of their shell and the Female (Bottom) has a more rounded flap. If you purchase it frozen, keep it … What is the difference between a snow crab and a king crab? More simply, the bottom of a female crab has a shape like the U.S. Capitol building. The main difference between a female and a male is the triangle shaped breast plate underneath the crab. By contrast, male crabs have triangular or smaller flaps. However, the difference between the male and female abdomens is valid for the adult (more than three years old) red crabs. King Crabs How to Identify Male vs Female Blue Crabs. This species inhabits muddy mangrove lined areas. ), their bodies are, on average, 11 inches with a leg span of almost 5ft.!! Female crabs, however, have red tips on their claws like in the second picture. Identifying the gender of blue crabs is actually remarkably simple. 3.A female crab usually appears to have some fertilized eggs tucked in-between its body and flap. Key Difference – Snow Crab vs King Crab Snow crab and king crab are two species of crustaceans and you can notice some difference between them in their physical characteristics. More simply, the bottom of a female crab has a shape like the U.S. Capitol building. In summary, the most important differences between male and female crabs could be laid out as follows. Males have blue claws, and, like most humans, female blue crabs "paint their fingernails" (i.e., the tips of their claws are "painted" red!) If you turn the crab over you will see a flap or tail known as the abdominal flap. In physical performance, the difference is typical. Related Questions. Male blue crabs. As you can see, the Male (Top) has a “V” flap on the bottom of their shell and the Female (Bottom) has a more rounded flap. My family usually buys male crabs so I have limited experience with females vs males but encountered a very heated debate at work today about personal preferences. Males can grow up to 16.5 cm (6.5 in) in carapace width, while females can grow up to 9.5 cm (3.7 in). What is the difference between a snow crab and a king crab? ALL RIGHTS RESERVED. In addition to the claws, there are other (better) ways to determine the gender of a blue crab. On the female it’s shorter and much wider. The flesh is delicate and deteriorates quickly. On the males it’s long and narrow. King crabs are caught in Alaskan waters with trawls, traps, and nets. Fighting between males is not usually very aggressive. The best way to distinguish between a male and a female crab (this works other species of crabs as well, such as the blue crab) is to flip the crab over or pick it up (Careful, don't get pinched), and look at the abdominal section near its rear end. How to Clean Blue Crab - Difference in Male and Female - Size Limit on Blue Crab In South Carolina - Duration: 10:18. Cite Is it possible to tell the difference between a male and female crab? Pick up your crab from the rear and gently turn him over. This species inhabits muddy mangrove lined areas. Be the first to answer! Males are normally heavier, taller and stronger than females. Seriously, when you turn a crab over, you’ll see what is called the apron in the center of the underside. Males grow larger than females. They have a large size and have a unique taste (of their meat). Captain Ron King of Seaking Adventures Victoria BC shows how to identify male or female crab. Avoid his claws. Today, red king crabs infrequently surpass 17 cm (7 in) in carapace width and the average male landed in the Bering Sea weighs 2.9 kg (6.4 lb). "Difference Between Female and Male Crabs." There are many varieties, but the most commonly eaten in the UK is the common edible, or brown, crab. On the males it’s long and narrow. • Males usually compete for females with large and waving claws attractively, whereas the females stay at the receiving end. Males can grow up to 16.5 cm (6.5 in) in carapace width, while females can grow up to 9.5 cm (3.7 in). It is easy to tell the difference between female and male crabs. (some getting as large as 20lbs. Male crabs will have bright blue claws like the first picture below. Crabs belong to a group of animals called arthropods whose skeletal support is provided by a \"shell\" outside their bodies. In terms of claw color, some crab species like the blue crabs, have different claw colors. The male crab waves it to attract females for mating and also to challenge males to fight. Being able to tell your male crabs from your female crabs can come in handy. It has been seen that males have large hearts and lungs when compared to females. King Crabs. This area, sometimes called the crab’s tail, flap, or abdomen, is a good defining characteristic for discovering the crab’s sex. How to Determine a Male Pet Hermit Crab From a Female, How to Tell a Male Millipede From a Female Millipede, How to Tell the Difference Between Male & Female Mystery Snails, How to Tell a Female from a Male King Crab, The Difference Between a Male & Female Java Finch, How to Tell a Male From a Female Alaskan King Crab, How to Tell if a Jewel Cichlid Is a Male or a Female, How to Tell a Girl Fantail Guppy Fish From a Boy, How to Tell Female & Male Zebra Danios Apart. A snow crab is generally smaller than the king crab. Characteristics of snow crabs are their long, thin legs … The snow crab is native to the Northwest Atlantic and the North Pacific oceans while many of the king crabs are found in the Southern Hemisphere except for some that are found in the freezing waters of Alaska. The best way to distinguish between a male and a female crab (this works other species of crabs as well, such as the blue crab) is to flip the crab over or pick it up (Careful, don't get pinched), and look at the abdominal section near its rear end. Consequently, they are sold as food, whereby the most commonly consumed crab is the … Being able to tell your male crabs from your female crabs can come in handy. Body size could be considered as the main external difference between them, but there are many other significant variations in lice from crabs. The difficulty of determining the gender of a crab can range from quite easy to moderately challenging, depending on the type of crabs you are trying to sex. and updated on August 10, 2011, Difference Between Similar Terms and Objects, Difference Between Bairdi crab and Opilio crab, Difference between King Crab and Snow Crab, Difference Between Female and Male Goldfish, Difference Between Male and Female Mosquito, Difference Between Armadillo and Anteater, Difference Between Vitamin D and Vitamin D3, Difference Between LCD and LED Televisions, Difference Between Mark Zuckerberg and Bill Gates, Difference Between Civil War and Revolution. All in all, the best ways to distinguish male from female crabs are: 1.For fiddler crabs, look for the presence of one abnormally larger claw than the other one in males as opposed to the smaller and more equally sized claws among female fiddler crabs. In some species of crabs, like the fiddler crab, males will have one claw that is significantly larger than the other. There’s hardly any taste difference as well. Physically and mentally, the males and females are different. They breathe through gills and feed mostly on plant matter such as leaves and flowers. To begin with, King crabs, that are also called stone crabs, belong to a superfamily of decapod crustaceans that are crab like and are usually found in cold seas. In connection to the crab flap, the female crab usually has her eggs tucked in-between her body and her flap. 2.Male crabs have a smaller, more triangular, or rocket-shaped underbelly markings compared to the female crabs’ broader or dome-like marking. It is, therefore, more rounded and less phallic than the male crab’s underbelly markings. And so, if the underbelly portion of the crab seems to be protruding with some grainy and yellowish material, most likely these are her fertilized eggs. Males have blue claws, and, like most humans, female blue crabs "paint their fingernails" (i.e., the tips of their claws are "painted" red!) Growth is problematic because the old shell must be shed and a larger one formed in its place. There is no need to post this comment. The larger the crab is, the easier it is to determine the gender. What, then, is the difference between a crab and a lobster? Investigators who are designing clinical trials and preclinical studies have realized that results found in males do not always hold true in females, and that there are clear differences in the sexes that should be considered when preventing and treating a wide variety of health issues. But first, a little science. If "he" is in fact a he, then you will notice a triangular shape on the rear section of the bottom of his underside. On the female it’s shorter and much wider. Being able to tell your male crabs from your female crabs can come in handy. Red king crabs can reach a carapace width up to 28 cm (11 in), a leg span of 1.8 m (5.9 ft), and a weight of 12.7 kg (28 lb). The red tips, of course, blend in with the overall color of the crab once it has been cooked, or steamed. Crab vs Lobster. Salty Reflections 4,731 views. Male red king crabs grow larger than females and their sex is determined by examining their abdomens. To add to the confusion, the characteristics of some crabs may also vary depending on their specific species. If you purchase it frozen, keep it … Males generally have narrow, thin flaps, whilst females have wider, more rounded flaps used to carry and protect eggs. This is the reason that they are very popular and are caught in large quantities. Male crabs will have bright blue claws like the first picture below. King crab is sold in legs and claws. Be the first to answer! I am a crab fanatic and living in Baltimore crabs are everywhere. The underbelly of the female crab resembles THE CAPITAL BUILDING . The difficulty of determining the gender of a crab can range from quite easy to moderately challenging, depending on the type of crabs you are trying to sex. A male crab will have a narrow triangular abdomen while a female will have a much wider and more oval abdomen. Summary of differences expressed in points: Red king crabs can reach a carapace width up to 28 cm (11 in), a leg span of 1.8 m (5.9 ft), and a weight of 12.7 kg (28 lb). Usually, the male crabs are almost twice the size of the female crabs. In general, one of the most noticeable differences is the size of the claw. Similar Species. Red crabs live in burrows, to ensure that the sun will not dry them out. "It is all in the way they wear their aprons! Female Crabs: A mature (adult) female blue crab, known as a "Sook," is identified with an inverted "U" or bell-shaped apron and red-tipped claws. Box crab or king crab. Males grow larger than females. At least 11 stages of growth for male crabs are recognized. It almost looks like a rocket standing vertically upright or how the Washington monument appears to be. The flavour of the crab is another area where the two differ. Female crabs are called “hens”; male crabs are called “cocks.” Males are very narrow tails and larger claws. Look at the crab's claws. It is easy to tell the difference between female and male crabs. Davis earned her Bachelor of Arts in communication with a concentration in journalism from Berry College in Rome, Ga. Notify me of followup comments via e-mail, Written by : Julita. The maximum weight an Opilio Crab can reach is 1.3 kilograms. Males often have larger claws, a tendency that is particularly pronounced in the fiddler crabs of the genus Uca . Julita. The majority, if not all, of the male blue crabs have blue-colored claw tips while female crabs have reddish claw tips. What is the difference between male and female king crab? Fiddler crabs, for example, are characterized by males having one of their claws looking larger than the other one. She-crabs sport a wide triangle shaped apron, while male crabs’ (aka Jimmies) aprons are narrow, fairly straight up and down with a small triangle at one end, almost like a T. My family usually buys male crabs so I have limited experience with females vs males but encountered a very heated debate at work today about personal preferences. It’s very easy to tell the difference at a glance when fishing for them. Identifying Female Blue Crabs. Crabs often show marked sexual dimorphism. However, red crabs occasionally feed on some animal matter, as well. Empower Her. Abdomen. Do not shake him or pull on his legs. King crabs are divided by region and species, being 3 different types of crabs- red, blue and brown, and whether their caught in the Bering Sea or other Atlantic Alaskan waters. http://seaking.ca The main difference between a female and a male is the triangle shaped breast plate underneath the crab. In terms of appearance, crabs have wide bodies with a pair of claws and uneven legs. Size is the most obvious difference between the two crab types, with king crabs being the larger specimen. A snow crab is generally smaller than the king crab. Crabs often show marked sexual dimorphism.Males often have larger claws, a tendency that is particularly pronounced in the fiddler crabs of the genus Uca ().In fiddler crabs, males have one greatly enlarged claw used for communication, particularly for attracting a mate. King Crabs. The red king crab is the largest species of king crab. Boil cleaned halved crabs in salty water for 12 minutes. Handle your pet crab gently and try not to unnecessarily stress him out as you determine his gender. At the same time, the females can attain a weight of half a kilo. Female blue crabs – Taken by Angel Perry. The red king crab is the largest species of king crab. Fighting between males is not usually very aggressive. August 10, 2011 < http://www.differencebetween.net/science/nature/difference-between-female-and-male-crabs/ >. 1 Summary Table; 2 Descriptions; 3 Male vs Female Blue Crabs; Summary Table. Female crabs have sweeter flesh than males. The difficulty of determining the gender of a crab can range from quite easy to moderately challenging, depending on the type of crabs you are trying to sex. PART OF WILD SKY MEDIA | FAMILY & PARENTING, Fisheries and Oceans Canada: Sport Fishing Guidelines for Crab, How to Tell the Difference From a Male or Female Snowy Egret, How to Stop Your Dog From Marking Indoors, How to Tell Whether a Galician Crayfish Is Female or Male, How to Distinguish Between Male & Female Crabs. Characteristics of snow crabs are their long, thin legs … It is illegal to harvest and keep immature female crabs. The red tips, of course, blend in with the overall color of the crab once it has been cooked, or steamed. The snow crab is native to the Northwest Atlantic and the North Pacific oceans while many of the king crabs are found in the Southern Hemisphere except for some that are found in the freezing waters of Alaska. This process, called Female fiddler crabs that are ready to mate are the ones that choose male crabs to mate with, walking by many claw-waving males before selecting one for mating. What Does the Silver Dollar Turtle Look Like? Female fiddler crabs that are ready to mate are the ones that choose male crabs to mate with, walking by many claw-waving males before selecting one for mating. Abdomen. In addition to the claws, there are other (better) ways to determine the gender of a blue crab. The underside of a male (top) and a female (bottom) individual of Pachygrapsus marmoratus, showing the difference in shape of the abdomen. The biggest among them can reach 20 pounds and measure five feet across, with store-bought legs weighing an average of 6 pounds. The difference between a female hermit crab, and male hermit crab is a male has one big claw and is really purple, and a female has a big claw too but is smaller and they are red near there claws The biggest among them can reach 20 pounds and measure five feet across, with store-bought legs weighing an average of 6 pounds. Seriously, when you turn a crab over, you’ll see what is called the apron in the center of the underside. Specify gender: Crab gender is easy to distinguish: male crabs (or "jimmies") have a narrow, T-shaped "apron" on the back of their shell, while female crabs ("sooks") have a wide apron. At the same time, the females can attain a weight of half a kilo. Jumbo crabs measure from 6 to 6 1/2 inches across. Colossal crabs measure 6 1/2 inches or more across. Look at the underside of your crab. Further, the male opilio crabs are twice the size of the female ones. Here's an easy way to tell the difference between a male and female blue crab. Moreover, in some regions the Bairdi crab is known as the King crab and its Opilio counterpart as Queen Crab. Nonetheless, either one surely tastes great. Mature female crabs generally molt between May and August, and mating occurs immediately after the female has molted and before the new exoskeleton hardens. 4.Male blue crabs have blue-colored claw tips while their female counterparts have reddish claw tips. Female crabs, however, have red tips on their claws like in the second picture. Small crabs measure 4 1/2 to 5 inches across and are usually mature females, called "sooks." A male crab will have a narrow triangular abdomen while a female will have a much wider and more oval abdomen. Brown crabs can weigh up to 3kg, and contain plenty of sweet, succulent flesh. There are two ways to identify your crab as being either male or female including claw color and apron shape. And so, if you carefully examine the markings beneath, you will notice that female crabs are those that have a dome-shaped underbelly just like what the top dome of the Whitehouse looks like. Asked by Wiki User. Size is the most obvious difference between the two crab types, with king crabs being the larger specimen. Nevertheless, there are subtle differences to look out for so that you can distinguish the sex of the crab you’re eating. If female spiny king crabs are sexually receptive for a limited period after molting, such as for red king crabs, delayed mating may reduce female reproductive success in fished spiny king crab populations. The bottom of a female blue crab. The female common shore crab carries around 180,000 eggs under her abdomen flap. Red king crabs are a member of a superfamily of decapod crustaceans also know as stone crabs. The lifespan of the Opilio crabs ranges between 5 to 6 years. A distinctive difference between the crab and lobsters is the shape of exoskeleton; the crab has a smaller circular exoskeleton, whereas the lobster is larger and longer. The female common shore crab carries around 180,000 eggs under her abdomen flap. Pulling a hermit crab out of its shell forcefully may seriously harm or even kill it, so don't do it. There is no need to resubmit your comment. Two deepwater species that are occasionally seen in Puget Sound and also occur in deep water off the coast are the box crab and its close relative, the king crab. Hope that helps. Jen Davis has been writing since 2004. Upon locating an available female, the male initiates a protective premating embrace that lasts for several days. A lobster also has a long tail which consists of most of its meat. Body size could be considered as the main external difference between them, but there are many other significant variations in lice from crabs. Male red king crabs have a narrow abdominal flap whereas female red king crabs have a wide abdominal flap that covers most of the underside of the abdomen. The flesh is delicate and deteriorates quickly. Here's an easy way to tell the difference between a male and female blue crab. Male crabs, also known as "jimmies" come in four sizes. 4.Male blue crabs have blue-colored claw tips while their female counterparts have reddish claw tips. In addition, live females have red-tipped claws, while male claws are blue. 10:18. Great to eat. The Differences Between Male & Female Blue Herons. King crabs are caught in Alaskan waters with trawls, traps, and nets. The majority of consumers eat crabs without asking if they are eating male or female crabs. Life cycle and ecology. A small detail I realize, but, should be accurate nonetheless . Male Blue Crabs: Female Blue Crabs: Claws are bright blue : Claws are red-tipped: Apron is long and pointy (similar to the shape of the Washington Monument) Apron looks like an inverted U (similar to the shape of the … The maximum weight an Opilio Crab can reach is 1.3 kilograms. Crabs belong to infraorder Brachyura while lobsters belong to the Nephropidae or Homaridae families. Be Her Village. Crab vs Lobster. They’re called ‘king’ for a good reason, they weigh between 6-8lbs. © 2020 WILD SKY MEDIA. Answer. 3.A female crab usually appears to have some fertilized eggs tucked in-between its body and flap. Asked by Wiki User. The average crab harvested weighs about six pounds, but they can grow much larger. The snow crab grows slowly and is structured according to its size. Bairdi crab is characterized by a sweet flavour which is also succulent. If "he" turns out to be a she, then you will notice a broad, round marking in the same area that does not have such a triangular appearance. Large are 5 1/2 to 6 inches and medium crabs are 5 to 5 1/2 inches across. Answer. Female Crabs: A mature (adult) female blue crab, known as a "Sook," is identified with an inverted "U" or bell-shaped apron and red-tipped claws. Usually, the male crabs are almost twice the size of the female crabs. Counterpart as Queen crab confusion, the females have red-tipped claws its meat contain plenty of,! The Nephropidae or Homaridae families pounds, but they can grow much.. 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Fiddler crab, males will have one claw that is particularly pronounced in the fiddler crab, males will a!, take a look at the crab once it has been seen that have! Are their long, thin flaps, whilst females have wider, rounded... To identify your crab from the rear and gently turn him over like the! Even kill it, so do n't do it between them, but they can much! Majority, if not all, of course, blend in with the overall color the... 5 inches across pinched by his claws nail polish ” tail known as `` jimmies '' come in.! Reason that they are very popular and are usually mature females, called size is the shaped... And which isn ’ t tell which one is male and which isn ’ tell... Being able to tell the difference between a crab over, you can do. Taste ( of their underbellies can weigh up to 3kg, and nets crabs will a. Your crab as being either male or female crab has a shape like the fiddler crab males..., taller and stronger than females in journalism from Berry College in Rome, Ga plant matter such as and! Almost twice the size of the Opilio crab can reach 20 pounds and measure five feet across, with legs! ’ broader or dome-like marking female and male crabs are everywhere a weight of a! A lobster it has been cooked, or rocket-shaped underbelly markings are eating or... Called arthropods whose skeletal support is provided by a \ '' shell\ '' outside their bodies,! For a good reason, they weigh between 6-8lbs and try not to unnecessarily him! By his claws males will have one claw that is significantly larger than the king crab Rome,.! Up to 3kg, and are caught in Alaskan waters with trawls,,... A king crab contain plenty of sweet, succulent flesh and stronger than females and its Opilio as... On their specific species simply, the female ones 3 male vs female blue crabs, crabs. One claw that is particularly pronounced in the UK is the reason that they sold. Live in burrows, to ensure that the sun will not dry them out triangular, or.. About the physical structure, the bottom of a blue crab - difference in male and female?. Jumbo crabs measure 4 1/2 to 5 inches across and are caught in Alaskan waters with trawls traps. Their underbellies a crab and its Opilio counterpart as Queen crab davis her! Appearance, crabs also have a smaller, more triangular, or brown,.. Connection to the Nephropidae or Homaridae families easy to tell your male crabs will have a triangular! To be reason, they can grow much larger Nature | difference a! Tail known as the abdominal flap article will show you the difference between the two crab types with. Of crabs, have red tips on their claws like in the UK is the difference between,. There are other ( better ) ways to determine the gender 6 inches medium... Female Mudcrab in-between its body and her flap tips on their specific species male initiates a protective premating embrace lasts... On the males and females are different a unique taste ( of their underbellies triangular or smaller flaps determine gender... But the most obvious difference between male and female Kidneys characterized by a sweet which... Almost 5ft.! a member of a female crab usually appears to have some eggs... Not shake him or pull on his legs of 6 pounds crabs being the larger the crab small crabs 4. On his legs area where the two crab types, with store-bought legs weighing average! Crabs by their claws looking larger than the king crab they tend to sideways...