Anal fin — Free Oceanography Illustration | GPAI | GPAI

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Anal fin — Free Oceanography Illustration | GPAI | GPAI

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Anal fin

Anal fin

Oceanography

Anal fin

Single ventral fin on the underside of a fish near the rear of the body behind the abdomen, shown as a low elongated triangular or fan-shaped fin with fine visible supporting rays spread through a thin translucent membrane. A narrow stabilizing fin positioned toward the posterior underside.

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PNG

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