Types of Fish

Types of Fish

Types of Fish
Reading Level

	edHelper's suggested reading level:	grades 3 to 6
	Flesch-Kincaid grade level:	6.58

Vocabulary

challenging words:

air-filled, anti-freeze, basses, cartilage, cartilaginous, gills, hagfish, icefish, jawless, man-eaters, seahorses, species, suction, underside, wing-like, yoga

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Other Languages
Spanish: Tipos de Peces

Types of Fish

¹     Fish live and breathe in water. They use their gills to breathe, have fins and a streamlined body suitable for swimming, and have scales for protection. Fish are vertebrates - animals with a backbone. However, they are not the only animals with a backbone. Mammals (such as monkeys, horses, cats), reptiles (such as lizards, snakes), amphibians (such as frogs and toads), and birds also have a backbone, and they are all vertebrates.

²     There are over 25,000 different types of fish in the world - a count more than the combined total of mammals, reptiles, amphibians, and birds! Fish can be found in almost every type of underwater environment. For example, the Antarctic icefish can survive in water below the freezing point (32 degrees Fahrenheit) because their blood contains special anti-freeze chemicals to prevent their body from freezing. Sharks, salmons, electric eels, and seahorses are other examples of fish.

³     Fish can be divided into three groups: jawless fish, cartilaginous (pronounced "KAR-ti-LAJ-i-nus") fish, and bony fish. Both cartilaginous and bony fish have jaws.

Paragraphs 4 to 6:
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