| Family: |
Characidae (Characins; tetras), subfamily: Stethaprioninae |
| Max. size: |
6.13 cm SL (male/unsexed) |
| Environment: |
benthopelagic; freshwater |
| Distribution: |
South America: Upper Rio Curuá, Rio Xingu basin in southern Pará State, Brazil. |
| Diagnosis: |
Dorsal soft rays (total): 12-12; Anal soft rays: 32-35; Vertebrae: 34-34. Brachychalcinus reisi is distinguished from all other species of the genus by having a series of dark, conspicuous, wavy longitudinal stripes on the entire body (vs. longitudinal dark wavy stripes absent or restricted to middorsal portion of body) and by having 7-8 longitudinal scale rows between dorsal-fin origin and lateral line (vs. 8-12). In addition, it is diagnosed from B. copei (Steindachner, 1883), B. retrospina Boulenger, 1892 and B. parnaibae by having 9 branched dorsal-fin rays (vs. 10-11). It can be differentiated from B. nummus Böhlke, 1958 and B. orbicularis (Valenciennes, 1850) by having 8-9 horizontal scale rows between the lateral line and pelvic-fin origin (vs. 10-11). It further differs from B. nummus by having numerous paralleled arranged scale radii (vs. few divergent arranged scale radii) (Ref. 118114). |
| Biology: |
|
| IUCN Red List Status: |
Not Evaluated (N.E.) Ref. (130435)
|
| Threat to humans: |
harmless |
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