How bony fish are different from cartilaginous fish?

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Solution

Bony fish Cartilaginous fish
1. It has the bony endoskeleton. It has cartilaginous endoskeleton.
2. They have the mouth at the terminal end of the head. They have the mouth on the ventral side of the head.
3. They have cycloid scales. They have placoid scales.
4. Fertilization is external. Fertilization is internal.
Examples: Salmon, Seahorse. Examples: Sharks, skates.

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Bony fish	Cartilaginous fish
1. It has the bony endoskeleton.	It has cartilaginous endoskeleton.
2. They have the mouth at the terminal end of the head.	They have the mouth on the ventral side of the head.
3. They have cycloid scales.	They have placoid scales.
4. Fertilization is external.	Fertilization is internal.
Examples: Salmon, Seahorse.	Examples: Sharks, skates.