Overview

Comprehensive Description

Biology

Strongly red in nature, but gets pale in captivity. Maximum length reported to reach 4 cm TL (Ref. 1672).
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Distribution

South America: upper Meta River basin.
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Upper Meta River, Colombia.
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Physical Description

Size

Maximum size: 40 mm TL
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Max. size

1.7 cm SL (male/unsexed; (Ref. 38376))
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Type Information

Paratype for Axelrodia riesei Gery
Catalog Number: USNM 207924
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): H. Axelrod & Riese
Year Collected: 1964
Locality: East of Villavicencio, Upper Rio Meta Basin: Colombia, Meta Department, Colombia, South America
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Holotype for Axelrodia riesei Gery
Catalog Number: USNM 207923
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): H. Axelrod & Riese
Year Collected: 1964
Locality: East of Villavicencio, Upper Rio Meta Basin: Colombia, Meta Department, Colombia, South America
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Ecology

Habitat

Environment

benthopelagic; freshwater; pH range: 7.0; dH range: 8
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Conservation

Threats

Not Evaluated
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Relevance to Humans and Ecosystems

Benefits

Importance

fisheries: of no interest; aquarium: commercial
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Wikipedia

Ruby tetra

The ruby tetra (Axelrodia riesei) is a species of freshwater fish in the family Characidae. It is found in the Río Meta, Colombia, South America. In nature, it has a natural red colour, but this is somewhat lessened in captivity. Ruby tetras grow up to 4 cm (1.6 in) long.

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