University of Wisconsin Digital Collections
Link to University of Wisconsin Digital Collections
Link to University of Wisconsin Digital Collections
Ecology and Natural Resources Collection

Page View

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

Freshwater eel family - anguillidae,   pp. 255-261 ff. PDF (2.6 MB)


Page 255

 
Freshwater Eel Family- 
                 Anguillidae 
  One species of freshwater eel is known from Wisconsin and North 
America. Its entire range lies east of the Rocky Mountains; there are no
freshwater eels along the Pacific Coast of the United States. About 16 
species, all in the single genus Anguilla, occur widely throughout the 
world, particularly in the region of southeast Asia and the southwestern
Pacific Ocean, including Australia and New Zealand. The fossil record is
from the Upper Cretaceous to Recent. 
  The body is excessively elongated and almost round in cross section. 
The gill openings are small, the pelvic fins absent, and the scales, when
present, are small and embedded. 
  The Anguillidae or freshwater eels spawn in the sea, but early in life
they move into fresh water, where they grow into adults. They are catad-
romous fishes: they run downstream to breed. 
255 


Go up to Top of Page