Hemigrammus unilineatus
Hemigrammus unilineatus (Gill, 1858)
Featherfin tetra
Hemigrammus unilineatus
photo by Landines, M.


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Family:  Acestrorhamphidae (American tetras), subfamily: Pristellinae
Max. size:  5.3 cm TL (male/unsexed)
Environment:  benthopelagic; freshwater; pH range: 6 - 7.5; dH range: 20
Distribution:  Central and South America: River basins of Trinidad, coastal river basins of Venezuela, rivers of Guyana, Suriname, French Guiana; Amazon and Guaporé River basins.
Diagnosis:   
Biology:  Usually found in ponds, ditches, slow flowing streams, both clear and turbid, in both open and shaded areas. A voracious species which feeds on small crustaceans, insects and mollusks (Ref. 12225). Gregarious and non-aggressive, it is reputedly easy to rear and to reproduce in the aquarium (Ref. 27188). Maximum length questionable (Ref. 38376).
IUCN Red List Status: Least Concern (LC); Date assessed: 04 March 2021 Ref. (130435)
Threat to humans:  harmless


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