- Animals
- ›Chordates
- ›Vertebrates
- ›Ray-finned Fishes
- ›Carps, Characins, Catfishes and Allies
- ›Characins
- ›Characoidei
- ›American tetras
- ›Red tetras
- ›Axelrodia
Ruby tetra
Axelrodia riesei
The ruby tetra (Axelrodia riesei) is a species of freshwater fish in the family Characidae. It is endemic to 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 3 cm (1.2 in) to 3.5 cm (1.4 in) long.
From the article Ruby tetra on Wikipedia (CC BY-SA), quoted section by section
Description
The ruby tetra is a small fish with a maximum standard length of 2.5 cm (0.98 in). The dominant colour of this species is ruby red, but this fades in captivity. This species can be told apart from A. stigmatias by having 14 or 15 rays in the anal fin, having between 7 and 10 premaxillary teeth and 4 or 5 maxillary teeth, and its standard length being over 3 times the depth of the body.
Range & habitat
The ruby tetra is found in northern South America in the upper Orinoco basin of Colombia and Venezuela. It may also occur in the upper Rio Negro in Brazil, but this requires confirmation. This species prefers small tributaries.
Wikipedia: “Distribution and habitat”
In human culture
The ruby tetra is classified within the genus Axelrodia, and has the specific name reisei. The genus name honours the aquarist and publisher Herbert R. Axelrod, while the specific name honours William Riese, an exporter of tropical fish; these were the two people who collected the holotype of this species.
Wikipedia: “Etymology”
Where it lives
Recorded sightings
—
geo-referenced records in GBIF, from museums, herbaria and field observers.
Drag the globe to turn it. Dots are where records exist, not a range map; darker means more records.
In the stacks
Searching the stacks…
Every page naming Axelrodia riesei in the Biodiversity Heritage Library →
This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 610264.