Dorsal fin — Free Biology Illustration | GPAI | GPAI

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Dorsal fin — Free Biology Illustration | GPAI | GPAI

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Dorsal fin

Dorsal fin

Biology

Dorsal fin

A single dorsal fin projecting upward from the midline of a fish's back, upright and triangular to gently curved in shape, with a smooth firm leading edge, slightly curved trailing edge, and a tapered tip. The fin is supported by fine fin rays within a thin translucent membrane, and shown isolated as an anatomical structure.

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