Overview

Comprehensive Description

Hemigrammus unilineatus

MZUSP 30323 (1 ex. 33.6 mm SL), Brasil , Rio Branco, Cachoeira Bern Querer , M. Goulding , 08/01/1984 ;

  • Ricardo C. Benine, Guilherme A. M. Lopes (2007): A new species of Hemigrammus Gill, 1858 (Characiformes: Characidae) from Rio Caura, Venezuela. Zootaxa 1610, 53-59: 58-58, URL:http://www.zoobank.org/urn:lsid:zoobank.org:pub:8F7DB5AE-2937-4AA4-A1AD-6561D71A16B6
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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).
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Distribution

River basins of Trinidad I, coastal river basins of Venezuela, and of Guyana, Suriname and French Guiana; Guaporé and Amazon River basins: Brazil, French Guiana, Guyana, Peru, Suriname, Trinidad and Tobago, and Venezuela.
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Central and South America: River basins of Trinidad, coastal river basins of Venezuela, rivers of Guyana, Suriname, French Guiana; Amazon and Guaporé River basins.
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Physical Description

Size

Maximum size: 50 mm TL
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Max. size

5.3 cm TL (male/unsexed; (Ref. 38376))
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Type Information

Paratype for Hemigrammus unilineatus
Catalog Number: USNM 179757
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): M. Hergat
Year Collected: 1957
Locality: French Guiana: Creek From the Waters of Cayenne I., French Guiana, South America
  • Paratype:
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Ecology

Habitat

Environment

benthopelagic; freshwater; pH range: 6.0 - 7.5; dH range: 20
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Trophic Strategy

Feeds on planktonic and benthic organisms (Ref. 12225).
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Conservation

Threats

Not Evaluated
  • IUCN 2006 2006 IUCN red list of threatened species. www.iucnredlist.org. Downloaded July 2006.
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Relevance to Humans and Ecosystems

Benefits

Importance

aquarium: commercial
  • Robins, C.R., R.M. Bailey, C.E. Bond, J.R. Brooker, E.A. Lachner, R.N. Lea and W.B. Scott 1991 World fishes important to North Americans. Exclusive of species from the continental waters of the United States and Canada. Am. Fish. Soc. Spec. Publ. (21):243 p. (Ref. 4537)
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