Can a crab live in fish bowl or is it to small for it?

It depends on the size of the crab and the size of the fish bowl. A small crab may be able to live in a fish bowl, but a larger crab will not have enough room to move around and will eventually die. Crabs also need access to water that is deep enough for them to submerge themselves completely, and a fish bowl may not be deep enough for this. In general, it is not recommended to keep crabs in fish bowls.