DORSAL & ANAL FINS help keep the fish balanced so its body won’t tip from side to side. One function of the anal fin may be to sense the size and texture of the gravel that is best suited for spawning.
A fish has eyes that can see in all directions. Each eye works by itself, so the fish can see to the front and back at the same time. Eyelids and tear glands are not needed because water keeps the eyes wet and clean. Most fish are nearsighted, using other senses to detect food at a distance then moving closer to visually identify it. Their eyes are large and pupils do not contract in response to light, which may in part be why fish often prefer shaded areas.
PECTORAL & PELVIC FINS are found on each side of the body, like arms and legs in animals. These fins are used for turning, backing up and stopping, in addition to balancing.
THE ADIPOSE FIN is small and fleshy. While it is not known for sure what function it serves, recent evidence suggests it may help juvenile salmonids swim, and that adult females prefer males with large adipose fins.
DORSAL & ANAL FINS help keep the fish balanced so its body won’t tip from side to side. One function of the anal fin may be to sense the size and texture of the gravel that is best suited for spawning.
A fish has eyes that can see in all directions. Each eye works by itself, so the fish can see to the front and back at the same time. Eyelids and tear glands are not needed because water keeps the eyes wet and clean. Most fish are nearsighted, using other senses to detect food at a distance then moving closer to visually identify it. Their eyes are large and pupils do not contract in response to light, which may in part be why fish often prefer shaded areas.
PECTORAL & PELVIC FINS are found on each side of the body, like arms and legs in animals. These fins are used for turning, backing up and stopping, in addition to balancing.
THE ADIPOSE FIN is small and fleshy. While it is not known for sure what function it serves, recent evidence suggests it may help juvenile salmonids swim, and that adult females prefer males with large adipose fins.
