Fish swim in the water

Author: (English) Spierberly et al
Publisher:
Publish Date: 2007-01-12
Features: The "Amazing Life" series includes six books: "Wonderful Dogs," "Fluffy Chick," "Flying Cavalry Grasshoppers," "Sunflower Sunflowers," "Fish Swim in Water," and "Pet Guinea Pig." This book tells you about fish. There are approximately 25,000 different types of fish in the world. Although various fish look very different, they still share some common characteristics. All fish are vertebrates, live in water, and breathe through a special organ called "gills." Fish are cold-blooded animals, and their body temperature changes with the surrounding water temperature.