New Cnesterodon livebearer described


Editor's Picks
Do I need an aquarium filter
Features Post
Do I need a filter for an aquarium?
07 February 2024
Features Post
How to set up an African biotope aquarium
01 February 2024
Fishkeeping News Post
AQUAH: A new UK aquatic and reptile show for 2024
17 January 2024
Practical Fishkeeping Readers' Poll 2023
Fishkeeping News Post
Readers' Poll 2023
07 August 2023

A new species of livebearing tropical fish has been described from the Rio Uruguai drainage in the Republic of Uruguay.

Cnesterodon holopteros is a member of the Poeciliinae and has just been named in a paper in Zootaxa by Paulo Lucinda, Thomas Litz and Roberto Recuero.

Females of Cnesterodon holopteros have eight or nine vertical bars which run along the flanks and extend from the back almost to the belly. Some females have just seven bars, but in all specimens they typically measure about one to three scales in width.

The gonopodium of male Cnesterodon holopteros is gently arched and narrows towards the tip where there is a bony "style" and a distal filament.

The pelvic-fin rays are unbranched and the species has four branchiostegal rays.

The Cnesterodon genus contains another seven species, including: Cnesterodon brevirostratus; Cnesterodon carnegiei; Cnesterodon decemmaculatus; Cnesterodon hypselurus; Cnesterodon omorgmatos; Cnesterodon raddai and Cnesterodon septentrionalis.

The Cnesterodon genus is a member of the poeciliid subfamily Poeciliinae, which contains around 27 different genera.

For more information see the paper: Lucinda PHF, Litz T and R Recuero (2006) - Cnesterodon holopteros (Cyprinodontiformes: Poeciliidae: Poeciliinae), a new species from the Republic of Uruguay. Zootaxa 1350: 21-31 (2006).