Eigenmann's gymnotus
Back caption: Eigenmann's gymnotus / Eigenmania virescens. A peculiar species which propels itself almost entirely by a long fin attached to the lower surface. A relative to the well-known Electric Eel, a native of South America.
ca. 1930s
Photograph
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English
Digitized by Wildlife Conservation Society Archives
1 postcard: colored photograph ; 9 x 14 cm
Wildlife Conservation Society Archives Collection 2016
2016-pc-787