Description: Brook Stickleback has a deep, compressed body with a typical length of 38-61 mm with four to six dorsal spines on its back. This species is scale-less but has bony plates along the sides of its body. One of the main indicators to distinguish the type of stickleback is by the dorsal fin which has 9 to 11 rays.

Habitat:It inhabits the shallow edges of clear, cool ponds withvegetation cover.