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Cartilaginous fish have entirely cartilaginous endoskeletons, meaning their skeletons are made from cartilage. They also have strong jaws, paired appendages, well-developed sense organs, and hunt using a system known as the lateral-line system, which uses vibrations to recognize prey. They can have placoid scales or be naked, and they do not have a swim bladder. They have a dorsal nerve cord that leads to a distinct brain, and they have a notochord.

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14y ago
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9y ago

Osteichthyes is a class of fish that are composed of a skeleton bone and cartilage.

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12y ago

Bony fish=osteichthyes.

Includes: salmon, bass, halibut, and any other fish with scales and calcium bones (bones like us people)

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13y ago

1) They spawn rather than mate

2) They have a wide variety in their diet

3) Two chambered heart

4) Skin that contains scales

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14y ago

bilateral symmetry

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11y ago

placoid scales

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Q: What type of symmetry does an osteichthyes have?
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