dorsal fin

Noun

Meaning

unpaired median fin on the backs of fishes and some other aquatic vertebrates that help to maintain balance

Synonyms

Hypernyms

Examples

At about convert the male's dorsal fin is more than twice the size of the female's and is more of a triangular shape—a tall, elongated isosceles triangle —whereas hers is shorter and more curved. Source: Internet

All species have a dorsal fin to prevent themselves from involuntarily spinning in the water. Source: Internet

Based on its dorsal fin and the shape of its head, some (such as Bernard Heuvelmans ) have suggested that the animal was some sort of marine mammal. Source: Internet

Generally silvery-white in color, hence the name, depending upon habitat and size specimens have begun to develop a darker shade near the dorsal fin and along the top of the fish. Source: Internet

Gobies have two distinct dorsal fins, Blennies have a single dorsal fin that runs the length of their body. Source: Internet

It has a long neck with a turtle-like head and a long continuous dorsal fin. Source: Internet

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