Fish live in water, features a body temperature amendment is named cold-blooded animals (pokiloterm). Fish breathe with gills, however there are bound forms of fish that breathe with lungs.
There also are fish that may live in swampy areas or areas that lack of oxygen, as a type of gill-breathing equipment expanded to create a labyrinth that may store oxygen. Fish have fins and limbs of the tail. Envious and also the tail is employed because the management or direction of movement for steering. Fish have a lateral line that serves to manage water pressure.
In general, fish reproduce by laying eggs or ovipar, some are laying eggs however hatch whereas still within its mother's body is named ovovipar, some even with a bear known as viviparous. Fertilization happens outside the body is named external fertilization. On relatives have goldfish swim bladder that functions to manage the position of his body up and down simply in water.
Fish are classified into 2 namely:
a cartilaginous fishes. Example: sharks, stingrays.
b. true bony fish. Example: carp, fish betok, carp, sea bass, tuna, and thus forth.
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