Animal Encyclopedia -- Fish

Author: Huaiyi
Publisher:
Publish Date: 1999-04-01
Features: Most children don't know much about fish because they live in water, and we don't have many opportunities to observe them. In fact, there are 25,000 known fish species in the world, which is more than the combined total of the other four vertebrate groups (amphibians, reptiles, birds, and mammals). Fish are very useful to humans. Let's learn more about fish.