Question

Name the type of caudal fin and scales that are present in a Shark and Catla respectively.

Answer 1

The causal fin is the tail fin, located at the end of causal peduncles and is used for propulsion. Causal fin shapes vary in all the fishes according to their environment. Shark possess a hetrocercal causal fin in which the dorsal portion is usually noticeably larger than the ventral portion. While in catla fish causal fin is forked.

The skin of shark is entirely by small placid scales, while Catla body is covered with conspicuously large cycloid scales.

Answer 2

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⭐. In shark caudal fin is heterocercal and scales are placoid.

⭐. In catla fish caudal fin is homocercal and scales are cycloid or ctenoid.