if crab fishing is so dangerous (think Deadliest Catch) why aren’t there crab farms like we have with fish?

Question

if crab fishing is so dangerous (think Deadliest Catch) why aren’t there crab farms like we have with fish?

In: 12205

Answer 1

Some crabs are already farmed, notably mud crabs in south asia and hairy crabs in China.

Deep sea crabs aren’t farmed simply because it’s not economically viable. Depending on the species they might take 10 years to reach market size and live hundreds of metres deep, whereas mud crabs can be sold in less than a year.

Also some species are prone to attack each other.