Final answer:
Osteichthyes (bony fishes) encompass fish like anglerfish due to their bony skeleton.
Explanation:
Osteichthyes (bony fishes) is the biological group that includes fish. Fishes like anglerfish belong to this group due to their bony skeleton, which is a defining characteristic. Jellyfish, crayfish, and starfish are not part of the biological group of fish.
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