Overview

Comprehensive Description

Biology

Grows up to 6 cm TL in aquaria (Ref. 13614).
  • Taphorn, D., R. Royero, A. Machado-Allison and F. Mago Leccia 1997 Lista actualizada de los peces de agua dulce de Venezuela. p.55-100. In E. La Marca (ed.) Catálogo zoológico de Venezuela. vol. 1. Vertebrados actuales y fosiles de Venezuela. Museo de Ciencia y Tecnologia de Mérida, Venezuela. (Ref. 28768)   http://www.fishbase.org/references/FBRefSummary.php?id=28768&speccode=51825 External link.
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Distribution

Range Description

This species occurs in tributaries around Motatán River in the Lake Maracaibo basin.
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South America: San Juan River, tributary to Motatán River, Lake Maracaibo basin in Venezuela.
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San Juan River, tributary to Motatán River, Lake Maracaibo basin, Venezuela.
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Physical Description

Size

Max. size

4.4 cm (male/unsexed; (Ref. 39970))
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Type Information

Paratype for Pygidium banneaui maracaiboensis
Catalog Number: USNM 121231
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 Motatan 4 km. Above Motatan, Maracaibo Basin, Venezuela, South America
  • Paratype: Schultz, L. P. 1944. Proceedings of the United States National Museum. 94 (3172): 262, 6b.
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Paratype for Pygidium banneaui maracaiboensis
Catalog Number: USNM 121230
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): L. Schultz
Year Collected: 1942
Locality: Venezuela: Rio Palmar, Near Totuma, About 100 km. Southwest of Maracaibo, Zulia, Venezuela, South America
  • Paratype: Schultz, L. P. 1944. Proceedings of the United States National Museum. 94 (3172): 262, 6b.
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Paratype for Pygidium banneaui maracaiboensis
Catalog Number: USNM 121229
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): L. Schultz
Year Collected: 1942
Locality: Venezuela: Rio Machango, 20 km. Above Bridge, South of Lagunillas, Maracaibo Basin, Venezuela, South America
  • Paratype: Schultz, L. P. 1944. Proceedings of the United States National Museum. 94 (3172): 262, 6b.
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Paratype for Pygidium banneaui maracaiboensis
Catalog Number: USNM 121228
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 San Juan Near Bridge South of Mene Grande, Trib of Rio Motatan, Maracaibo System., Venezuela, South America
  • Paratype: Schultz, L. P. 1944. Proceedings of the United States National Museum. 94 (3172): 262, 6b.
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Holotype for Pygidium banneaui maracaiboensis
Catalog Number: USNM 121227
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Preparation: Radiograph
Collector(s): L. Schultz
Year Collected: 1942
Locality: Venez: Rio San Juan Near Bridge South of Mene Grande, Trib of Rio Motatan, Maracaibo System., Venezuela, South America
  • Holotype: Schultz, L. P. 1944. Proceedings of the United States National Museum. 94 (3172): 262, 6b.
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
T. maracaiboensis is a benthopelagic (ecological region at the lowest level of water body) species and occurs in tributaries around Motatán River in the Lake Maracaibo basin.

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
This species has a small distribution in an area where habitat has been altered and polluted. However, this species does not seem to be threatened by any major process. A Least Concern assessment has been made but monitoring of this species should be carried out to make sure it does not decline.
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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
There has been large amounts of habitat degradation around Lake Maracaibo which has lead to water pollution in the area as well. However, these environmental problems are not adversely affecting T. maracaiboensis.
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Least Concern (LC)
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Management

Conservation Actions

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

Trichomycterus maracaiboensis

Trichomycterus maracaiboensis is a species of pencil catfish endemic to Venezuela, where it occurs in the San Juan river, a tributary to the Motatán river in the Lake Maracaibo basin.[1][2] This species reaches a maximum length of 4.4 centimetres (1.7 in) in the wild; in aquaria, it may grow up to 6 centimetres (2.4 in) TL.[2]

References[edit]

  1. ^ a b Reis, R. & Lima, F. (2009). "Trichomycterus maracaiboensis". IUCN Red List of Threatened Species. Version 2014.1. International Union for Conservation of Nature. Retrieved 10 July 2014. 
  2. ^ a b Froese, Rainer and Pauly, Daniel, eds. (2014). "Trichomycterus maracaiboensis" in FishBase. July 2014 version.


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