Ctenobrycon is a genus of fish of the family Characidae found in tropical South America, with five currently recognized species in this genus. Ctenobrycon species can be located is fresh water in tropical climates in South America, commonly in calm waters.  Their diet includes zooplankton, plants, worms, insects, and crustaceans.
An adult female can produce an average of 2,000 eggs. The fry hatch about 50 to 70 hours later, and after the third day look for food.
- Ctenobrycon alleni (C. H. Eigenmann & McAtee, 1907)
- Ctenobrycon hauxwellianus (Cope, 1870)
- Ctenobrycon multiradiatus (Steindachner, 1876)
- Ctenobrycon oliverai Benine, G. A. M. Lopes & Ron, 2010
- Ctenobrycon spilurus (Valenciennes, 1850) (silver tetra)
- Ricardo C. Benine, Guilherme A. M. Lopes, & Ernesto Ron. "A new species of Ctenobrycon Eigenmann, 1908 (Characiformes: Characidae) from the Rio Orinoco basin, Venezuela." Zootaxa 2715 (2010): 59-67.
- "Ctenobrycon spilurus (Valenciennes, 1850) Silver tetra". Fish Base. Retrieved 29 December 2012.
- "Ctenobrycon spilurus Overview Silver Tetra". Encyclopedia of Life. Retrieved 29 December 2012.
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