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It depends on the type of crab. For crabs like Mini Crabs, the male will have one large front claw and one small one, while females have two small ones. I am not sure about other crabs.
For most crabs, if you flip them onto their back, males tend to be flatter whereas females are rounder! When you put a male and a female together you can clearly tell which on is female, they have a bigger underside.
http://farm4.static.Flickr.com/31622632570873_feaab4c966.jpg
Male on left, female on right
When talking about Mud Crabs.....each crab has a tai, When you turn the crab over, the male's tails is distinctly shaped like a triangle while the Jenny has a rounded tail!
What else can I help you with?
All clams start out as a male or female?
male
What does a clams start out as male or female?
When clams are fist born they are male, but eventually as they get older some of them choose to be females.wow that's just weird
Are sexes in clams monoecious or dioecious?
Clams are typically dioecious, meaning they have distinct male and female individuals. However, some species of clams can be considered monoecious, as they may possess both male and female reproductive organs at different life stages. Generally, in most clam species, individuals are either male or female, contributing to their reproduction through separate sexes.
How do clam mate?
One clam opens it shell. Then the next. Then the male clam sticks it "tongue" in the female clams mouth. Then the female and male shut their shells. Then they start to do a "dance" Then they release their shells and continue as normal.
Does a clam reproduce sexually or asexually?
Clams have sexual reproduction. A male clam releases his sperm into the water at the same time that a female clam releases her eggs into the water. Somehow the male and female clams know how to do it at the same time and somehow the sperm and the eggs get together.
How often do fresh water clams reproduce?
how do u know if a clam is a male or a female
Feeder fish How do you tell male from female of the?
Feeder fish, How do you tell male from female of the?
How do you tell if a pacific tree frog is a female or male?
How do you tell a male pacific frog from a female
How can you identify a clams sex?
Clams can be either male, female or both (hermaphroditic) depending on what stage it is on during its life cycle. For example, the hard clam (quahog) begins its life cycle as a male, then later on may become a female. The various kinds of cockles found around the world are all hermaphroditic as adults. There is no way to really tell a male from a female clam. Fortunately, either sex tastes equally good, which for most people is probably all that matters in this regard.
Some emus have blue on their neck Are they male or female?
Both male and female emus have blue on their necks. It is impossible to tell the male and female apart by appearance alone.
How can you tell if a dog is male or female?
You can tell if a dog is male or female by looking at their genitals. Male dogs have a penis and testicles, while female dogs have a vulva.
How do you tell if you have a male angelfish or a female?
You can tell a male angel fish from a female one by all the colorful stripes it has. [the male one]
