In which of the following fishes is the dorsa | vedclass

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(B) $Echeneis$ is commonly known as the sucker fish. Its upper surface bears a large,flat,oval adhesive disc or sucker. This sucker represents a modif

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Echeneis

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(B) $Echeneis$ is commonly known as the sucker fish. Its upper surface bears a large,flat,oval adhesive disc or sucker. This sucker represents a modified anterior dorsal fin,which allows the fish to attach itself to larger marine animals like sharks or turtles for transport and protection.

In which of the following fishes is the dorsal fin modified into a sucker?

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