| Family: |
Rivulidae (Rivulines), subfamily: Rivulinae |
| Max. size: |
3.72 cm SL (male/unsexed); 3.41 cm SL (female) |
| Environment: |
benthopelagic; freshwater; depth range 0 - 1 m, non-migratory |
| Distribution: |
South America: Bolivia. |
| Diagnosis: |
Dorsal soft rays (total): 9-9; Anal soft rays: 13-15. This males of this species is distinguished from all other species of the A. limoncochae species group by having the anal fin pattern consisting of a sub-basal row of red, closely-set dots forming stripes and a black fin margin (vs. absence, or if present, in reduced number and well separated). Further distinguished from the members of A. limoncochae species group occurring in the rio Madeira basin as follows: differs from A. chapare by the number of scales on longitudinal series 47-49 (vs. 43-44), with dorsal fin origin above base of the 10th or 11th anal-fin ray (vs.12th-13th anal fin ray), and males with pelvic fin yellow on distal portion (vs. light blue); differs from A. christinae by the number of scales on longitudinal series 47-49 (vs. 38-41), scales around caudal peduncle 18-20 (vs. 17-18) and males with black margins on unpaired fin (vs. dark margin hardly visible); differs from A. luitalimae by the number of scales on longitudinal series 47-49 (vs. 43-44), dorsal-fin rays 9 (vs. 7), caudal and pectoral-fin rays 29 and 15, respectively (vs. 26-28 and 12, respectively), with reduced number of pelvic-fin rays 6 (vs. 7) and by a distinct dorsal fin proximal portion coloration in males whitish (vs. pale yellow); differs from A. parlettei by the number of scales on longitudinal series 47-49 (vs. 37-40) and the caudal-fin rays 26-28 (vs. 24) and males with red stripes on sides (vs. irregularly striped to dotted pattern); differs from A. lineasoppilatae by the number of scales on longitudinal series 47-49 (vs. 36-39), dorsal fin origin above base of the 10th or 11th anal-fin ray (vs. 7th-8th anal-fin ray) and males with red stripes running from humeral region to caudal peduncle (vs. starting from the area posterior to pectoral fin); differs from A. hoetmeri by the number of pectoral-fin rays 15 (vs. 14), the number of scales on longitudinal series 47-49 (vs. 42-44), with scales around caudal peduncle 18-20 (vs. 16) and males with seven thin longitudinal stripes on caudal peduncle (vs. six lines, three of which interrupted at the level of anal fin origin), dorsal fin with white coloration at the proximal portion (vs. white with golden patch); differs from A. taeniatus by by the number of scales on longitudinal series 47-49 (vs. 38-40), and with less pelvic-fin rays 6 (vs. 7). The females can be distinguished from females of the other species of the A. limoncochae species group by the reduced black spot on the upper portion of the caudal-fin base (vs. broad black spot) (Ref. 130459). |
| Biology: |
Specimens were collected in a forest stream, about 4 meters wide and 0.1-0.2 meters deep with substrate composed by sand and stone, without aquatic vegetation. The water was fast, clear and transparent, with the following abiotic parameters (during the middle morning): temperature 22°C, pH 8.9, conductivity 213 µS.cm-2. Other fish present were unidentified cichlids and characids (Ref. 130459). |
| IUCN Red List Status: |
Not Evaluated (N.E.) Ref. (130435)
|
| Threat to humans: |
harmless |
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