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It’s a Fish

A sea horse is a fish.

It’s a Fish

It’s a Fish

Sometimes it’s hard to tell what’s a fish and what isn’t. A sea horse doesn’t look like a fish, but it is. And a dolphin looks like a fish, but it isn’t!How can you tell if an animal is a fish? Well, nearly all fish have scales. Scales are little round or diamond-shaped pieces of thin bony stuff. They fit together over the fish’s whole body.And nearly all fish have fins. A fish usu­ally has a fin on its back, a fin on its belly, a broad fin for a tail, and two fins on each side.And all fish have gills. Gills are slits in a fish’s head, behind its mouth. Fish breathe with gills.Scales, fins, and sills—if it has all these things, it’s a fish!
A perch is a fish.An eel is a fish.
This is a triggerfish.

This fish

This is a looking page. What does the picture tell you about the fish? This fish has shiny scales. Scales are like small, thin pieces of fingernail that cover a fish’s body. This fish has big,…

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Champion egg layers

Some fish don’t lay eggs. Some fish lay a few eggs. Some fish lay thousands of eggs, and some fish lay millions of eggs. A mother herring may lay more than forty thousand eggs at a time. The eggs…

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Finny fathers

In the world of fish, it is often the father that does most of the baby-sitting. A father smallmouth black bass starts to take care of his babies even before they’re hatched. He makes a wide,…

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Fish food

Nearly everything that lives in the water is food for a hungry fish. In the ocean, most fish eat only other fish. Ocean cod, hake, tarpon, and tuna dine on smaller herrings, sar­dines, and…

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