| Rivulidae (Rivulines), subfamily: Rivulinae |
| 2.89 cm SL (male/unsexed) |
|
benthopelagic; freshwater; pH range: 4.4 |
| South America: known only from the type locality, a pond in Rio Negro basin, Amazonas, Venezuela. |
|
Dorsal soft rays (total): 8-9; Anal soft rays: 13-14; Vertebrae: 31-31. Belongs to the subgenus Owiyeye and differs from other congeners, except Rivulus altivelis, Rivulus nicoi, Rivulus tecminae and Rivulus uakti, by possessing long pelvic fins (pelvic-fin length up to about 25 % of SL, reaching the middle of
anal-fin base in males vs. short pelvic fin, reaching anterior portion of anal-fi n base). Can be separated from other species of the subgenus (except for Rivulus amanapira,
Rivulus rectocaudatus and Rivulus tecminae) by truncate caudal fin in males (vs. round, subtruncate, spatula- or lyre-shaped caudal fin). Its 35-38 scales in the longitudinal series separate this species from other species (vs. 41-44 in Rivulus altivelis, 48-49 in Rivulus amanapira and 38-43 in Rivulus rectocaudatus and Rivulus tecminae, 26-29 in Rivulus nicoi and 32-33 in Rivulus uakti) (Ref. 87326). |
| Found in a pond with clear, light brownish color and very acidic water (Ref. 87326). |
|
Data deficient (DD); Date assessed: 08 June 2017 Ref. (130435)
|
| harmless |
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