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Phalloceros heptaktinos Lucinda, 2008 Seven ray toothcarp |
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photo by
Lucinda, P.H.F. |
| Family: | Poeciliidae (Poeciliids), subfamily: Poeciliinae | |||
| Max. size: | 2.4 cm SL (male/unsexed); 3.03 cm SL (female) | |||
| Environment: | benthopelagic; freshwater | |||
| Distribution: | South America: known only from tributarues of the arroio dos Ratos, Jacuí basin in Rio Grande do Sul, Brazil. | |||
| Diagnosis: | Dorsal soft rays (total): 7-8; Anal soft rays: 9-11; Vertebrae: 31-31. Diagnosed from its congeners by the absence of the basal process of first gonactinost. Can be differentiated from its congeners by the sexual dimorphism on number of dorsal-fin rays, males with eight rays (very exceptionally seven) and females with seven rays (very exceptionally eight) (Ref. 76852). Description: Pectoral fin with 6-8 branched rays; longitudinal series of scales 27-29; transverse series of scales 7 (Ref. 76852). | |||
| Biology: | ||||
| IUCN Red List Status: | Data deficient (DD); Date assessed: 07 November 2018 Ref. (130435) | |||
| Threat to humans: | harmless | |||