Jump to content

Tyttocharax metae

From Wikipedia, the free encyclopedia

Tyttocharax metae
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Characiformes
Family: Characidae
Genus: Tyttocharax
Species:
T. metae
Binomial name
Tyttocharax metae

Tyttocharax metae is a small freshwater fish of the family Characidae which is found in the Güejar river system of the Orinoco Basin in Colombia. It was discovered in the Columbian municipality of Vista Hermosa in 2009 and was formally described in 2012 by Román-Valencia, García-Alzate, Ruiz-C. & Taphorn.[2]

Etymology

[edit]

T. metae was named for the Meta Department of Colombia where it was first discovered.[2]

Description

[edit]
Lateral posterior view of T. metae displaying its unique anal fins.[2]

Males of T. metae reach and average standard length of 1.39 ± 0.13 cm (0.54 ± 0.05 in) while females reach a similar length of 1.4 ± 1.0 cm (0.55 ± 0.04 in), with a maximum standard length of approximately 1.86 cm (0.73 in).[2] It is colored a greenish-yellow in the dorsal sides of the head, body, and post ventral portions of the body with a blue stripe running down the side of the body, with a notable absence of dark coloration.[2] T. metae lacks any distinction of coloration between sexes, unlike the related T. tambopatensis.[3]

It is most notably distinguished from other species of Tyttocharax by its presence of bony hooks on the caudal and pectoral fin rays, and distinguished from T. madeirae and T. cochui by its absence of an adipose fin and by the bony hooks of its anal fins being longer than those on its pelvic fins rather than them being the same size.[3]

Distribution

[edit]

T. metae has only been found in the Güejar river system of the Orinoco Basin in Colombia.[2] It is found in fast-running streams with high dissolved oxygen contents.[3]

References

[edit]
  1. ^ "Tyttocharax metae". IUCN Redlist. International Union for Conservation of Nature and Natural Resources. 12 October 2020.
  2. ^ a b c d e f Román-Valencia, César; García-Alzate, Carlos A.; Ruiz-C., Raquel I.; Taphorn B., Donald C. (28 September 2012), A new species of Tyttocharax (Characiformes: Characidae: Stevardiinae) from the Güejar River, Orinoco River Basin, Colombia, vol. 10, Neotropical Ichthyology, doi:10.1590/S1679-62252012000300004
  3. ^ a b c Torres, Armi G. "Tyttocharax metae, Román-Valencia, García-Alzate, Ruiz-C. & Taphorn, 2012". FishBase.