"the female crimson Clawed Mangrove crab will carry her eggs below her huge tail for roughly 3 weeks. Callinectes sapidus is a decapod crab of the swimming crab family Portunidae. A ph of 8. Click on each picture to see a bigger picture. Breeding of the red-clawed crab in captivity is a very unlikely occurrence. She was missing two legs, a pincher, and had some funky stuff growing on her exoskeleton. She now has 2 new legs, 1 new pincher, and a fairly clean exoskeleton. The Red Claw Crab gets their name from their bright red claws. However, multiple hiding places and a large aquarium providing plenty of space to set up territories can reduce the risk. To qualify as raising one brood of eggs, you must have raised at least one crablet to the stage that it exits the water. I ended up with a 20 gallon tank, centered around the crabs' needs, with the main focal point being a large driftwood flume that uses return water to create a shallow rapids area. My dad put together an aquarium for my kid and i wanted a crab, well i wanted a blue crayfish but those were $25 and the crabs were $3 and they were equally as cool if not more so. Il be buying 4 Red Clawed Crabs to start with. ),