What is a Fish?

Fish are by far the most diverse of all the vertebrate groups. Discover the shared characteristics that make a fish, a fish.

Biology - Animal Kingdom - Learning Points.

Fish are aquatic vertebrates.

Jellyfish, starfish and other marine invertebrates are not fish at all.

Fish are cold-blooded - their temperature is controlled by their external environment.

Fish share other important adaptations, such as gills, paired fins, scales and external reproduction.
A Twig Curriculum Film.
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