Deep Cheep

A Deep-Cheep is a special variety of Cheep-Cheep found in New Super Mario Bros. and New Super Mario Bros. Wii. Unlike regular Cheep-Cheeps, these fish are green and will actively hunt Mario or Luigi down in the underwater levels. Deep-Cheeps will only give up the pursuit after the plumbers swim far enough away. Their behavior resembles Rip Van Fishes' behavior from Super Mario World.

Though they do not appear in Super Mario Bros. 3, green Cheep-Cheeps can be seen.