Edit Gymnocorymbus ternetzi
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Name
Scientific name
Gymnocorymbus ternetzi
Described by
Not recorded
Family
Characidae
Common names
Black Widow Tetra
Photograph credits
All 2 credited
Summary
The black widow tetra, Gymnocorymbus ternetzi, is a characid from the Rio Paraguay and Guaporé basins in Brazil, Bolivia and Argentina. All…
Size and aquarium
Maximum size
60mm, standard length
Aquarium size
Minimum length 75 cm, Minimum depth 30 cm
Water
Water conditions
Temperature 20–26°C, pH 6–7
Hardness
5–20dGH
Conductivity
Not recorded
Behaviour
Temperament
Not recorded
Social needs
A shoal or group
Community suitability
Not recorded
Where it lives
Countries, regions, rivers and lakes
Argentina, Bolivia, Brazil
Writing
Etymology
Not written yet
Distribution
Rio Paraguay and Guaporé basins in Brazil, Bolivia and Argentina.
Habitat
Small, slow-moving creeks, tributaries and streams, usually with dense overhanging vegetation.
Aquarium size
A group of these can be kept in a standard 30" x 12" (75cm x 30cm) - 20g long/70 litre tank.
Maintenance
Fairly unfussy with regard to decor. It's an active species and prefers plenty of open swimming space, along with some quieter areas. It will show its best col…
Water conditions
Temperature: 20 – 26 °C pH: 6.0-7.0 Hardness: 5-20°H
Diet
A most unfussy, omnivorous species. Flakes and granules, along with regular feedings of small live and frozen foods such as Daphnia and bloodworm are recommend…
Behaviour and compatibility
One of the better tetras for the 'general' community tank. The black widow is generally peaceful and lively, and its subdued patterning makes a good contrast t…
Sexual dimorphism
Males are noticeably slimmer and a little smaller than females. The male also has more pointed dorsal and anal fins than the female.
Reproduction
Quite easily bred, although you'll need to set up a separate tank in which to do so if you want to save any fry. Something around 18" x 12" x 12" in size is fi…
Notes
This species is ubiquitous in most dealers' tanks and is one of the best choices for the newcomer to fishkeeping. All the fish sold in the trade have been capt…
References
References
No references