There are eight species of stickleback throughout the Northern Hemisphere. Only the three-spined and 10-spined are found in Britain. Despite the stickleback being prey for many organisms the species is actually a predator itself, with fish eggs and small fish or tadpoles part of its diet. Sticklebacks can grow up to 10cm long. The three-spined stickledback is also known as a tittlebat, and was featured in The Pickwick Papers by Charles Dickens. Individual fish pair up with other sticklebacks and work together to ward off and confuse predators such as trout and perch.