Question #309973
Explain how gas secretion into the swimbladders of bony fish is possible.
Expert's answer
Explain how gas secretion into the swimbladders of bony fish is possible.
In bony fish swim bladders, a connection is retained between the swim bladder and the gut, the pneumatic duct, allowing the fish to fill up the swim bladder by "gulping" air. Excess gas can be removed in a similar manner.
