Biomes Click on an animal to go to that printout. For the top 25 printouts, click here . Eels Eels are bony fish that have a muscular, snake-like body. There about 500 species of eels worldwide.
Some eels live in salt water, but many also live in fresh water.
Eels hatch from eggs that the the female lays. As it matures and develops some color, it is called an elver. Many eels migrate over long distances to breed and to eat. A fish that can generate electricity. The Gulper eel is a long, bony fish with huge, weak jaws.