| Family: |
Characidae (Characins; tetras), subfamily: Stevardiinae |
| Max. size: |
3.35 cm SL (male/unsexed); 3.71 cm SL (female) |
| Environment: |
benthopelagic; freshwater |
| Distribution: |
South America: Río Madre de Dios basin in Peru. |
| Diagnosis: |
Dorsal soft rays (total): 9-10; Vertebrae: 37-39. This species can be distinguished from its congeners by having the following characters: urogenital papilla present in sexually active males and females (vs. absent in M. pearsoni); urogenital papilla is about equal the length of anal fin-base (vs. half length of anal-fin base in M. drilos); dorsal fin height 13.4-15.8% SL in females and juveniles (vs. 16.1-17.8% SL in M. drilos); and 7 premaxillary tooth cusps (vs. 5 in M. drilos) (Ref. 94699).
Description: Dorsal-fin rays ii,7-8; anal-fin rays ii-iii,10-11; pectoral-fin rays i,8-9; pelvic-fin rays i,5,i; 2-3 scale rows from pelvic-fin origin to lateral line (Ref. 94699). |
| Biology: |
Occurs sympatrically with Monotocheirodon drilos (Ref. 94699). |
| IUCN Red List Status: |
Not Evaluated (N.E.) Ref. (130435)
|
| Threat to humans: |
harmless |
| Country info: |
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