Overview

Distribution

Range Description

This species is know from the south and west basins off Lake Maracaibo in Venezuela.
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South America: Maracaibo Lake basin.
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San Juan River, tributary to Motatán River, Lake Maracaibo basin, Venezuela.
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Physical Description

Size

Maximum size: 22 mm SL
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Max. size

2.2 cm SL (male/unsexed; (Ref. 28667))
  • Harold, A.S. and R.P. Vari 1994 Systematics of the Trans-Andean species of Creagrutus (Ostariophysi: Characiformers: Characidae). Smith. Contrib. Zool. (551):31 p. (Ref. 28667)
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Type Information

Paratype for Creagrutus maracaiboensis
Catalog Number: USNM 121532
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Preparation: Glycerin with Cartilage Stain; Illustration
Collector(s): L. Schultz
Year Collected: 1942
Locality: Venez: Rio Negro Below Mouth of Rio Yasa, Maracaibo Basin, Venezuela, South America
  • Paratype: Schultz, L. P. 1882. Proceedings of the United States National Museum. 5 (297): 327, 45, 46.
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Holotype for Creagrutus maracaiboensis
Catalog Number: USNM 121531
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): L. Schultz
Year Collected: 1942
Locality: Venez: Rio Negro Below Mouth of Rio Yasa, Maracaibo Basin, Venezuela, South America
  • Holotype: Schultz, L. P. 1882. Proceedings of the United States National Museum. 5 (297): 327, 45, 46.
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
C. maracaiboensis is a benthopelagic (ecological region at the lowest level of water body) species. Prefers relatively fast flowing waters, feeding on benthic invertebrates from the bottom. Occurs in small to medium sized streams, but not rivers.

Systems
  • Freshwater
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Environment

benthopelagic; freshwater
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2009

Assessor/s
Reis, R & Lima, F.

Reviewer/s
Collen, B., Darwall, W., Ram, M. & Smith, K. (SRLI Freshwater Fish Evaluation Workshop)

Contributor/s

Justification
Assessed as Least Concern because of the lack of threats acting on this species. It does have a restricted range in an area with heavy pollution and habitat degradation. Therefore monitoring of this species should take place.
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Population

Population
This species has a stable population trend at present.

Population Trend
Stable
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Threats

Major Threats
Due to the small nature of the streams in which the species occurs, it is likely that a good proportion of habitat remains intact enough to support this species. Even considering the extent of disturbance in the Lake Maraciabo basin, the species is likely not to have suffered unduly. Creagrutus species are relatively resilient to habitat modification.
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Least Concern (LC)
  • IUCN 2006 2006 IUCN red list of threatened species. www.iucnredlist.org. Downloaded July 2006.
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Management

Conservation Actions

Conservation Actions
There are no conservation measures in place and research into the population trends is required.
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