Becker, George C. / Fishes of Wisconsin
Mudminnow family - umbridae, pp. 385-390 PDF (2.2 MB)
Mudminnow Family- Umbridae One species of mudminnow occurs in Wisconsin, but four species in three genera are known from the United States and Canada (Robins et al. 1980). Although best represented by the North American species, they are considered of European ancestry. They are known from the Lower Eocene in Europe and Oligocene in North America. The mudminnows are characteristic inhabitants of small bog lakes, shallow muddy ponds, and slow-moving, vegetated streams. They are small fishes with rounded caudal fins, short snouts, and somewhat flat- tened heads. The pectoral fins are small to large and fanlike; the pelvic fins, small and abdominal. Mudminnows have a functional duct from the pharynx to the swim bladder and are capable of breathing atmos- pheric oxygen. 385
http://rightsstatements.org/vocab/InC/1.0/| Copyright 1983. The entirety of this book is available for viewing by the public as an Open Access text through the cooperative efforts of George Becker, the University of Wisconsin Press, and the UWDCC. This Work is copyrighted to the Board of Regents of the University of Wisconsin System. Any use of this material falling outside the purview of "Fair Use" requires the permission of the University of Wisconsin Press.