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Becker, George C. / Fishes of Wisconsin
(1983)

Mudminnow family - umbridae,   pp. 385-390 PDF (2.2 MB)


Page 385

 
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 


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