FISH

FISH

What are the characteristics of fish?

Physical appearance

The shape of a fish’s body and its body functions are adapted to life underwater.

A fish has a shape that moves easily through water.

It contracts and relaxes its tail and other muscles to move forwards.

Goldfish

Bubble fish

Telescope fish

Fins help the fish to change direction as it swims.

Most fish are covered with protective scales.

Body functions

Most fish are oviparous.

Fish breathe mainly through their gills. Water enters their mouths and exits through their gills.

During this process, the water passes over capillaries in the gills. The capillaries absorb oxygen and release carbon dioxide.

Types

• Bony fish have a skeleton made of hard bones.

• Cartilaginous fish have a skeleton made of softer and more flexible bones.

FISH

THE BLOBFISH

PEZ ARQUERO

15 CURIOSIDADES DE LOS PECES

OUTLINE