It is to balance the fish in the water.
NINGUNA
Pectoral fins are used for steering and maintaining balance, while pelvic fins help stabilize the fish's body and assist in maneuvering. Both fins also play a role in braking and hovering in water.
biem
These are the none paired fins of a fish (the dorsal, anal and caudal fins) and are thought to have a considerable effect on the motion and direction of a fish. Experimentation and research has been and is still being done to ascertain exactly the function of each of the 3 median fins.
To make the fish swim.
Arms? Do you mean fins?
Zoomers Gold Fins are a brand of swimming fins. The fins offer soft rubber foot pockets and improved blade stiffness in comparison to the company's older models.
its beauty and long flowing fins
fins,tail,& body
To help them turn, dive, climb rapidly and move.
Assuming you mean condenser, in an automobile ac system the condenser is used to condense vapor into liquid.
streamlined body. vertebrates. possess fins and gills.