Question

a __________ of fish​

Answer 1

${\huge{\bold{\purple{\underline{♡αnswer♡}}}}}$

$\huge \implies \large \rm\:Group$

Answer 2

Your answer-::

a group of fish.

Additional about the passage. ..-:::

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.