Native of Asia, but extensive introductions have helped to make it the world's most widely distributed freshwater fish. Description, image, and discussion of occurrence and management problems in Australia.

Overview of the program to sequence the genome of the zebrafish (Danio rerio), which is known as a powerful model to study vertebrate developmental biology and disease. Includes image.

Fact sheet about two members of the Catostomedae, or sucker family, found in Michigan. Includes an image of the white sucker, Catostomus commersoni. Also discusses the longnose sucker, C. catostomus.