The Topeka shiner, a finger-long minnow, looks like a streamlined goldfish. Listed as an endangered species in 1998, the shiner is suffering from water pollution in its native streams. Pesticide-laden runoff from fields and waste from animal factories reduce water quality, and sediment buries the shiner's eggs. The Sierra Club is working to demand better pollution controls from the U.S. Fish and Wildlife Service and the Environmental Protection Agency.

Federally endangered.