One adaptation would be a swim bladder, that being in bony fish. Sharks I believe have their liver that excretes squalene, which I believe has something to do with their density. In fact, it does.
Fish body is of boat shape to balance itself in the water nature have given swimming bladders for fish.
it cleans the water and keeps the fish safe:):):):)::):):):):):):):):):):):):):):):):)
The swim bladder keeps the fish upright in water.
Fish do not normally "float around" they swim. If your fish is floating/sinking then it is probably dead.
fish liver keeps it's boyancy to the best level. it keeps it from sinking to the bottom of the ocaen because with out it, it would sink to the bottom. that's completely inaccurate because that is the function of air bladder. the liver secrete enzymes.
i don't think fish sleep (the plural of fish is fish.)
The water tension keeps them from sinking
The swim bladder
It keeps their feet from sinking into the shifting sands common in the desert.
they have an organ called a swim bladder. It is filled with gas and it keeps them afloat.
Most fish typically have 7 fins in total. - The dorsal fin. Prevents fish from rolling. - Adipose Fin. Makes the fish hydrodynamic. - Caudal Fin (tail). Propels the fish through the water. - Pectoral fin (x2). helps the fish steer and halt. - Pelvic fin. Helps the fish steer and halt. - Anal fin. Keeps the fish from rolling.
fisherman.