Priocharax rex

Priocharax rex
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Division:	Teleostei
Order:	Characiformes
Family:	Acestrorhamphidae
Genus:	Priocharax
Species:	P. rex
Binomial name
	Priocharax rex; Mattox, Acosta-Santos, Bogotá-Gregory, Agudelo, F. C. T. Lima, 2025

Priocharax rex is a minute species of freshwater ray-finned fish belonging to the family Acestrorhamphidae, the American characins. This fish is considered to be found exclusively in the middle part of the Putumayo River basin in Colombia.

Size

This species reaches a length of 2.07 cm (0.81 in).

Etymology

The fish's name means "king" in Latin, referring to its size as the largest fish of the genus Priocharax.

Biology

Priocharax rex is distinguishable by a round flap of skin between contralateral pelvic fins.

References

↑ "CAS - Eschmeyer's Catalog of Fishes". researcharchive.calacademy.org. Retrieved 2025-12-09.
1 2 3 "Nueva especie de pez miniatura es descubierta en el Río Putumayo, Amazonas, Colombia". sinchi.org.co (in Spanish). Retrieved 2025-12-09.
↑ Mattox, George Mendes Taliaferro; Acosta-Santos, Astrid; Gregory, Juan D. Bogotá-; Agudelo, Edwin; Lima, Flávio C. T. (2025-01-28). "A new miniature Priocharax from the Rio Putumayo drainage, Amazonas State, Colombia (Teleostei: Characiformes: Characidae) with an unusual skin flap between pelvic fins". Zootaxa. 5575 (4): 545–554. doi:10.11646/zootaxa.5575.4.4. ISSN 1175-5334. PMID 40173851.

This Characiformes-related article is a stub. You can help Wikipedia by adding missing information.

[1] "CAS - Eschmeyer's Catalog of Fishes". researcharchive.calacademy.org. Retrieved 2025-12-09.

[:0-2] 1 2 3 "Nueva especie de pez miniatura es descubierta en el Río Putumayo, Amazonas, Colombia". sinchi.org.co (in Spanish). Retrieved 2025-12-09.

[3] Mattox, George Mendes Taliaferro; Acosta-Santos, Astrid; Gregory, Juan D. Bogotá-; Agudelo, Edwin; Lima, Flávio C. T. (2025-01-28). "A new miniature Priocharax from the Rio Putumayo drainage, Amazonas State, Colombia (Teleostei: Characiformes: Characidae) with an unusual skin flap between pelvic fins". Zootaxa. 5575 (4): 545–554. doi:10.11646/zootaxa.5575.4.4. ISSN 1175-5334. PMID 40173851.