Overview

Comprehensive Description

Biology

Occurs along the coastal zone and prefers water bodies with little current. Lives in groups. Feeds on worms, small insects, crustaceans and plants (Ref. 7020). The males are generally very much smaller and more svelte than the females. It is a very prolific species and its reproduction can easily be carried out in the aquarium (Ref. 12225). With an incubation temperature of 26°C, hatching of the eggs occurs within 48 to 60 hours (Ref. 27188). Maximum length questionable (Ref. 38376). Aquarium keeping: in groups of 5 or more individuals; minimum aquarium size 60 cm (Ref. 51539).
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Distribution

South America: Rivers of Guyana, Suriname, French Guiana, and Amazon basin in Brazil and Peru.
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Rivers of Guyana, Suriname, French Guiana, and Amazon basin in Peru and Brazil.
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Physical Description

Size

Maximum size: 45 mm ---
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Max. size

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

Habitat

Environment

benthopelagic; freshwater; pH range: 6.0 - 8.0; dH range: 5 - 19
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Trophic Strategy

Feeds on plants and invertebrates (Ref. 27188).
  • Mills, D. and G. Vevers 1989 The Tetra encyclopedia of freshwater tropical aquarium fishes. Tetra Press, New Jersey. 208 p. (Ref. 7020)
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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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Fin-rot Disease (late stage). 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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Fin Rot (early stage). 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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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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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Hemigrammus ocellifer

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 21
Species With Barcodes: 1
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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

fisheries: of no interest; aquarium: highly commercial
  • Mills, D. and G. Vevers 1989 The Tetra encyclopedia of freshwater tropical aquarium fishes. Tetra Press, New Jersey. 208 p. (Ref. 7020)
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Wikipedia

Head-and-taillight tetra

Hemigrammus ocellifer is a South American freshwater fish, also described by the synonyms Hemibrycon ocellifer and Tetragonopterus ocellifer.[1] Common names include beacon fish, beacon tetra and head-and-taillight tetra.[2] It is found in the rivers of Guyana, Suriname, French Guiana, and the Amazon Basin of Brazil and Peru.

Most specimens offered for sale in the aquatics trade are tank-raised.

It has a maximum size of 5 centimetres (2.0 in); the sexes are distinguished by mature females being fuller bodied.

Care[edit]

Captive-raised specimens will acclimatise to a range of water conditions: pH should be 6-8; dH up to 18°; and temperature 72 to 79 °F (22 to 26 °C).

A suitable species for planted community aquariums, beacon tetras should be kept in shoals of six or more and provided with floating plants to diffuse any bright lighting. Hiding places and open swimming areas should be available and consideration given to the colours of this fish showing best when they are housed in tanks with a dark substrate and background.

Feeding[edit]

Beacon tetras will accept flake, micropellets, and frozen foods such as mosquito larvae, brine shrimp and daphnia.

Breeding[edit]

An egg-laying species, Hemigrammus ocellifer is relatively easy to breed. A separate small planted breeding aquarium should be set up with soft, slightly acidic water, and the temperature set at the high end of their range. When morning sunlight hits the tank, spawning should commence, and between 200 and 1000 eggs can be laid. The parents should be removed immediately after spawning ceases, and the eggs will hatch in 24 hours.

References[edit]

  1. ^ "Synonyms of Hemigrammus ocellifer". FishBase. Retrieved 19 April 2013. 
  2. ^ "Common names of Hemigrammus ocellifer". FishBase. Retrieved 19 April 2013. 
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