a school, or a shoal
It is a shoal of fish.
The term fishes refers to more than one species of fish, as in "There are many species of fishes." That said you could have any of the combination. School of fish - a group of fish made up of a single species, School of fishes - a group of fishes made up of more than one species. Shoal of fish - group of fish of the same species moving in roughly the same direction. Shoal of fishes - group of fishes of different species moving roughly in the same direction.
Groups of fish is called a shoal.
Shoal (Pronounced School)
Hiroshige has written: 'One hundred famous views of Edo' 'A shoal of fishes' -- subject(s): Fishes in art
Bunch of bananas. Flock of birds. Shoal of fish.
There are many many different types of fish that form shoals.
A group of fishes is called a school of fish. In commercial fishing, a very large group of fish may look on the sonar like a shoal ( an area where the sea floor is relatively close to the surface, and will be called a shoal of fish. A group of marine mammals is often called a pod, as in a pod of porpoises.
If you mean - make a sentence with the word shoal, then: "The waves crashed on the shoal" Or it can refer to a group of fish as in "a shoal of tuna"
A shoal
shoal