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Scientific Name Gymnocorymbus ternetzi  (Boulenger, 1895)
Common Names Black Widow Tetra
Black Skirt Tetra, Sorgmanteltetra (Sweden), Trauermantel (Germany)
Type Locality Descalvados, Mato Grosso, Rio Paraguay, 16°46’S, 57°44’W, Brazil.
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Size 60mm or 2.4" SL. Find near, nearer or same sized spp.
Sexing The female black tetra is more robust and larger than the male.
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Distribution South America: Paraguay and Guaporé River basins to Argentina.
La Plata, Paraná, Paraguay (click on these areas to find other species found there)
Amazon, Middle Amazon (Solimoes), Madeira, Mamoré, Guaporé (Iténez) (click on these areas to find other species found there)

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IUCN Red List Category Least Concern, range map and more is available on the IUCN species page. Last assessed 2021.
Other Parameters This fish is very hardy and can tolerate a variety of water qualities.
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Compatibility A highly spirited fish that may occasionally chase its own species as well as harass slow moving fish with long fins.
Breeding Reports There is no breeding report.
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Reference Proceedings of the Zoological Society of London 1895 (pt 3), pp 528
Registered Keepers There is but a single registered keeper, view all "my fish" data.
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There are 2 records of this fish being seen, view them all.
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Last Update 2021 Jul 14 02:29 (species record created: 2013 Jun 14 10:09)