A group of fishes is called ___________?

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A. Clowder
B. Troop
C. Shoal
D. Skulk

Explanation:

A group of fish is called shoal or school of fish. Most fish tend to swim in groups to protect themselves from predators. The collective noun which denotes such a group depends on the species of the fish in the group, as exemplified by the terms a troop of dogfish, a swarm of eels and a glide of flying fish.