Gambusia Senilis
''Gambusia senilis'', the blotched gambusia, is a species of fish in the family Poeciliidae found in Mexico, where it is called ''guayacon pinto'', and formerly in the Devils River (Texas), Devil's River in the Rio Grande basin in Texas. The Texas population was local extinction, extirpated following the construction of the Amistad Dam. References

Gambusia, senilis Fish described in 1859 Taxonomy articles created by Polbot {{Cyprinodontiformes-stub ...
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Charles Frédéric Girard
Charles Frédéric Girard (8 March 1822 – 29 January 1895) was a French biologist specializing in ichthyology and herpetology. Born in Mulhouse, France, he studied at the College of Neuchâtel, Switzerland, as a student of Louis Agassiz. In 1847, he accompanied Agassiz as his assistant to Harvard University. Three years later, Spencer Fullerton Baird called him to the Smithsonian Institution to work on its growing collection of North American reptiles, amphibians and fishes. He worked at the museum for the next ten years and published numerous papers, many in collaboration with Baird. In 1854, he was naturalized as a U.S. citizen. Besides his work at the Smithsonian, he managed to earn an M.D. from Georgetown University in Washington, D.C. in 1856. In 1859 he returned to France and was awarded the Cuvier Prize by the Institute of France for his work on the North American reptiles and fishes two years later. When the American Civil War broke out, he joined the Confederate ...
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