![]() To stay alive, blue crabs use their gills to extract oxygen from the water. There is no fixed time period for crabs to live in freshwater. How long can blue crabs live in freshwater?īlue crabs can live in freshwater as long as they remain well-oxygenated. The versatile food habits of blue crabs is another reason why they can live in freshwater. They are also predacious in nature and that’s why they also tend to eat small crustaceans including its own species who are mostly small, vulnerable and soft-shelled blue crabs. Versatile food habits:īlue crabs have a versatile food habit because they will eat almost anything, including lifeless fish, algae and other plant materials, clams, snails, oysters, worms, insects, and mussels. They can survive and cope with any kind of unwanted situation like a change in salinity of the water body.įor harvesting and many other purposes, blue crabs are sometimes brought from oceans to freshwater for which they have to face a change of salinity level in water.īut, they are capable enough to adapt and that’s another reason why blue crabs can live in freshwater. Adaptability:īlue crabs have the ability to adapt as per the drastic changes to their habitat environment. This is one of the reasons why blue crabs can live in freshwater. ![]() In one of his experiments, he discovered that the blue crabs demonstrated some record breaking growth rate in freshwater. This was proven by none other than Dave Eggleston, who is the director of NC State’s Center for Marine Sciences and Technology (CMAST) and professor of marine, earth and atmospheric sciences. When blue crabs live in freshwater, they tend to show a rapid rate of growth. 3 reasons why blue crabs can live in freshwater:īlue crabs can certainly live-in freshwater and there are multiple facts that make it possible for this marine species to live in freshwater. Both of these species of crab are usually marine in nature. On the other hand, blue swimmer crabs and blue legged hermit crab are another two species of crabs. Blue crabs are also known as blue claw crabs because of their sapphire-tinted claws. These crabs are very strong swimmers in nature. The scientific name of blue crab is Callinectes sapidus which means “savory beautiful swimmers”. The water of Lake George is a mixture of salt and freshwater, which makes the ideal marine environment for the blue crabs. Lake Mattamuskeet has got plenty of big blue crabs in it.īesides, Lake George of Florida is a blue crab fishery hub where these crabs are harvested commercially. There are many lakes all over the world where blue crabs are abundantly available. Freshwater lake is an ideal estuary for the blue crabs.
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