Gills are organs in which carbon dioxide from the animal is exchanged for oxygen in the water.
It's the equivalent to the human lung. (how some underwater animals breathe)
Gills extract oxygen from the water much like how human lungs extract oxygen from the air. They are how a fish "breathes."
To help them breathe.
To breathe. . .They live UNDERWATER
the are used to help it swim
all fish have fins
of corse theres fins on the side of a fish :)
Fins are fan-like on some fish, they are used to move the fish in the water.
pectoral fins
yes, jawless fish have no paired fins
fins!
Most. There are very few fish that have no scales and all fish have fins.
To make the fish swim.
flying fish
gold fish have 7 fins
Fins