Gymnocorymbus ternetzi :
CI-FML 3826 , 2 ex., C&S, 33.7-35.6 mm, Paraguay , Alto Paraguay , Fortin Patria, Rio Negro .
- Juan Marcos Mirande, Gastón Aguilera, María de las Mercedes Azpelicueta (2007): A new species of Astyanax (Characiformes: Characidae) from the endorheic Río Salí basin, Tucumán, northwestern Argentina. Zootaxa 1646, 31-39: 33-33, URL:http://www.zoobank.org/urn:lsid:zoobank.org:pub:D83848ED-9E15-4C2C-A228-0288B2CAFBB9
Regularity: Regularly occurring
Type of Residency: Year-round
CI-FML 3826 , 2 ex., C&S, 33.7-35.6 mm, Paraguay , Alto Paraguay , Fortín Patria, Rio Negro .
Habitat Type: Marine
Non-Migrant: No. All populations of this species make significant seasonal migrations.
Locally Migrant: No. No populations of this species make local extended movements (generally less than 200 km) at particular times of the year (e.g., to breeding or wintering grounds, to hibernation sites).
Locally Migrant: No. No populations of this species make annual migrations of over 200 km.
Diseases and Parasites
Molecular Biology and Genetics
Barcode data: Gymnocorymbus ternetzi
Below is the sequence of the barcode region Cytochrome oxidase subunit 1 (COI or COX1) from a member of the species.
See the BOLD taxonomy browser for more complete information about this specimen.
Other sequences that do not yet meet barcode criteria may also be available.
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Download FASTA File
Statistics of barcoding coverage: Gymnocorymbus ternetzi
Public Records: 6
Specimens with Barcodes: 13
Species With Barcodes: 1
National NatureServe Conservation Status
Rounded National Status Rank: NNA - Not Applicable
NatureServe Conservation Status
Rounded Global Status Rank: GNR - Not Yet Ranked
Relevance to Humans and Ecosystems
|This article includes a list of references, related reading or external links, but its sources remain unclear because it lacks inline citations. (December 2012)|
The black tetra (Gymnocorymbus ternetzi) also known as the black skirt tetra, petticoat tetra, high-fin black skirt tetra, and black widow tetra, is a freshwater fish of the characin family (Characidae). It is native to the Paraguay and Guaporé River basins of southern Brazil, Argentina, and Bolivia.
Growing to about 6 cm (2.5 in) total length, the black tetra has a roughly tetragonal body shape and is greyish in colour, fading from near black at the tail to light at the nose. Two prominent, black, vertical bars appear just posterior to the gills. It is a schooling fish, and requires at least six in a group.
In the aquarium
The black skirt tetra is a common fish that is widely available for purchase.
The species reaches sexual maturity at about two years of age. Like most characins, this species spawns by intermittently releasing and fertilizing eggs among plants. It frequently eats its own eggs, so keepers remove the fish after spawning.
GloFish black tetras in shades of bright green, orange, purple, and pink are available.
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