Chondrichthyes {cartilaginous fish}| include shark, skate, stingray, and electric ray. Sharks are fast, but others are slow. Cartilaginous fish live in ocean. They have cartilage skeletons. They have paired jaws. They have two fin pairs. They have scaly skin. They have five to seven gill pairs, which send water from mouth out gill slits. They have teeth that are large scales. They have motor maps in optic tecta. They represent sensations in midbrain.
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4-Zoology-Kinds-Fish-Cartilaginous
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Date Modified: 2022.0224