Ninespine Stickleback, Pungitius pungitius
The body of the ninespine stickleback is much more slender compared to other members of this family. Its colour is light olive to brown and sometimes grayish back. Their sides are darkly mottled and the belly is lighter, silvery to white.Their body is not scaled and they do not have bony plates. They have nine (7-12) short and inclined alternately to left and right. The ninespine stickleback has a long and narrow caudal peduncle and the caudal fin is rounded. The average size of the ninespine stickleback is 2.5 inches.
The ninespine stickleback is found in both brackish waters and freshwater lakes and rivers. In rivers and streams it is generally found in slower areas where there is vegetation. The diet of the ninespine stickleback consists mostly on aquatic insects and crustaceans, but will will eat the eggs and young other speciesof fish. Spawning takes place over the summer in fresh water. Like other sticklebacks, the ninespine stickleback male builds a nest using pieces of vegetation and other debris, courts a female, and guards the eggs and young. Likely predators of the ninespinestickle are any larger fishes and fish eating birds.