A group of seven simple fish swimming in the same direction.

Seven Fish Swimming Together

A fish or puffer fish swimming in profile with a dorsal fin on top, fins on the bottom, and dots on its side.

Puffer Fish Swimming

A group of six simple fish swimming in the same direction.

An aquarium with two side-facing identical fish swimming towards each other over algae plants.

A group of three identical simple fish of varying sizes, swimming in the same direction. 

Five simple fish swimming in the same direction.

A fish or puffer fish in profile with lower fins and spots on its back.

A school of fish or shoal of fish swimming together through the water.