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Cnesterodon pirai Aguilera, Mirande & Azpelicueta, 2009 Almeida toothcarp |
| Family: | Poeciliidae (Poeciliids), subfamily: Poeciliinae | |||
| Max. size: | 2.82 cm SL (male/unsexed) | |||
| Environment: | pelagic; freshwater | |||
| Distribution: | South America: Argentina. Only know from its type locality, arroyo Almeida, affluent of arroyo Cuñá-Pirú, río Paraná basin, Aristóbulo del Valle, Misiones. In spite of the collecting effort in different streams of Misiones province, especially in the Cuñá-Pirú basin, C. pirai was not found in other sites (Ref. 82179). | |||
| Diagnosis: | Cnesterodon pirai is diagnosed by the combination of the following characters: 6 to 8 irregular dashes on flanks, ranging from oval to vertical stripes on females and 7 to 9 irregular dashes ranging from oval to circular dots on males (dashes both on males and females covering 1 or 2 scales in transverse row); absence of a large post-gonopodium blotch on ventral profile in adult males; lack of a distal filament on gonopodium; absence of longitudinal dark-brown band along flank; snout pointed and long (16.7–28.7 %HL); possession of 12–13 epipleural ribs; medial surface of ascending process of premaxilla approximately straight; presence of teeth on fourth ceratobranchial; distal portion of third and fourth gonactinosts separate, except by tip of third gonactinost; fifth gonactinost free; and presence of a constriction on unpaired appendix of gonopodium (Ref. 82179). | |||
| Biology: | ||||
| IUCN Red List Status: | Critically Endangered (CR); Date assessed: 28 November 2020 (B2ab(iii)) Ref. (130435) | |||
| Threat to humans: | harmless | |||
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