Overview

Comprehensive Description

Biology

Maximum length questionable (Ref. 38376).
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Distribution

Range Description

Known from floodplains lakes in the Solimões River (local name of the Amazon River above its confluence with the Negro in Brazil). There are no reliable records in Peru but the species probably more than likely occurs there (Lima pers. comm. 2007).
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South America: Amazon River basin.
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Amazon River basin: Brazil and Peru.
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Physical Description

Size

Maximum size: 40 mm TL
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Max. size

4.4 cm TL (male/unsexed; (Ref. 38376))
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
H. hyanuary is a benthopelagic (ecological region at the lowest level of water body) species. Occurs in flood plain lakes.

Systems
  • Freshwater
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Environment

benthopelagic; freshwater; pH range: 6.0 - 7.5; dH range: 15
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Diseases and Parasites

White spot Disease. Parasitic infestations (protozoa, worms, etc.)
  • Bassleer, G. 1997 Color guide of tropical fish diseases: on freshwater fish. Bassleer Biofish, Westmeerbeek, Belgium. 272 p. (Ref. 41805)
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Bacterial Infections (general). Bacterial diseases
  • Bassleer, G. 1997 Color guide of tropical fish diseases: on freshwater fish. Bassleer Biofish, Westmeerbeek, Belgium. 272 p. (Ref. 41805)
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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 due to its sizeable distribution, which is probably wider than known, and the lack of any known major widespread threats.
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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
Even if ornamental and as such exploited for the aquarium hobby, the harvest of the species is probably negligible for the species as a whole, considering that the species is probably not harvested in most of its range. It is however a species poorly known in nature.
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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 although they are needed.
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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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Wikipedia

Costello tetra

The Costello tetra is a species of characin from the Amazon basin and is found in Brazil and Peru.[1] The specific name comes from Lake Hyanuary in Brazil.[citation needed] Other common names used in English are January tetra and green neon. The name "green neon" is also used for Paracheirodon simulans.

Distribition[edit]

Costello tetras are found in the Amazon Basin.

In the aquarium[edit]

Costello tetras have been kept in the aquarium hobby. Some foods aquarists feed them include flakes, pellets, and live foods.

References[edit]

  1. ^ a b R. Reis & F. Lima (2009). "Hemigrammus hyanuary". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved September 20, 2012. 
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