The taxonomy of the genus Phenacogaster is reviewed in Colombia, and nine species are recognized in the country. This study includes the description of four new species using morphological data. The new species are: Phenacogaster yari, new species, from the Amazon River basin that differs from its congeners by the combination of an incomplete lateral line, the relative posterior position of the humeral spot, 29–32 branched anal-fin rays, six gill-rakers on the lower limb of the first gill arch, presence of bony hooks on pelvic-fin rays of males, absence of hooks on pectoral-fin rays of mature males, and a relatively shorter standard length (adult males with 25 mm SL); Phenacogaster nukak, new species, from the Orinoco River basin that differs from the other species by the combination of an incomplete lateral line, humeral spot far from the psedotympanum, 8–11 perforated scales in the lateral line, 29–30 teeth in the maxilla, 32–34 branched anal-fin rays, body height 28.8–43.3% SL, and pre-ventral length 37.4–41.7% SL; Phenacogaster tukano, new species, from the Amazon River basin that differs from the other species by the posteriorly displaced humeral spot and a complete lateral line; and Phenacogaster guayupe, new species, from the Orinoco basin is recognized by an incomplete lateral line, a large and round humeral spot near the pseudotympanum in females with width greater than half the ocular diameter, 2–3 large tricuspid teeth in the outer row of the premaxilla, and a pre-ventral length 36.4–43.3% SL. A taxonomic key for the identification of species is provided, together with distribution maps of all species in the genus in Colombia.
Skip Nav Destination
Article navigation
December 2024
Research Article|
December 11 2024
Four New Species of Phenacogaster (Characiformes: Characidae) and a Review of Its Diversity in Colombia
Tiago P. Carvalho
Tiago P. Carvalho
2
Search for other works by this author on:
Ichthyology & Herpetology (2024) 112 (4): 619–644.
Article history
Received:
November 15 2023
Accepted:
August 29 2024
Citation
Alejandro Romero-Figueroa, Tiago P. Carvalho; Four New Species of Phenacogaster (Characiformes: Characidae) and a Review of Its Diversity in Colombia. Ichthyology & Herpetology 1 December 2024; 112 (4): 619–644. doi: https://doi.org/10.1643/i2023094
Download citation file:
Sign in
Don't already have an account? Register
Client Account
You could not be signed in. Please check your email address / username and password and try again.
Could not validate captcha. Please try again.
Sign in via your Institution
Sign in via your Institution
7
Views
Citing articles via
A Man for All Wet Seasons: Kentwood D. Wells (1948–2024)
Joshua J. Schwartz, Johana Goyes Vallejos, Susan Z. Herrick, Kristiina Hurme, Patrick Owen, Michael J. Ryan, Kurt Schwenk
Effect of Turbidity on Survival and Growth of Juvenile Devils River Minnow (Dionda diaboli) Fed Chironomid Larvae
Namrata Giri, Brian G. Laub, Valentin Cantu