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Starfish is not a fish
Due to the absence of anatomical structures like fins, gills, or scales, starfish are not considered fish. The movement or locomotion of the starfish is different from fish.
According to research, starfish are called sea stars as they don’t fall in the class of fish—they breathe through the papules on the surface of their body.
These starfish facts explain being marine creatures, they don’t fall under the classification of fish, and most of us are unaware of it.
