To keep afloat
fins
They both help a fish to move
Fish move by swimming. They move their fins back and forth to swim. Some fishes have a swim bladder which is an organ that help bony fish stay in different depth.
ventral fins.
they swim with their fins.....
Because they are afraid that they might hit objects without knowing
it helps the fish to move and breathe
The flaps on a fish are called fins, which help the fish to maintain balance, steer, and move through water. There are different types of fins on a fish, such as dorsal fins, pectoral fins, pelvic fins, anal fins, and caudal fins.
they move by there fins and they feed with their mouth there gills help to
Fish have fins instead of legs. Fins help fish navigate and move through water by providing stability and propulsion.
fish and seahorses
The size, shape, and fins make the fish go fast. Some are build for speed and have special 'fins' on the top.