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Hemibrycon paez Román-Valencia & Arcila-Mesa, 2010 |
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photo by
Romàn-Valencia, C. |
| Family: | Stevardiidae (Stevardiids), subfamily: Hemibryconinae | |||
| Max. size: | 9.382 cm SL (male/unsexed) | |||
| Environment: | benthopelagic; freshwater | |||
| Distribution: | South America: drainages of the Río La Plata, upper Río Magdalena Basin in Colombia. | |||
| Diagnosis: | Dorsal soft rays (total): 9-10; Vertebrae: 40-41. Can be diagnosed in having the following characters: lateral line scales 39-42 (vs. 43-54; except 34-35 in Hemibrycon orcesi); scales between lateral line and anal-fin origin 6-7 (vs. 4-5; except 7-9 in Hemibrycon colombianus); and scales between lateral line and dorsal-fin origin 6-7 (vs. 8; except 7-10 in Hemibrycon colombianus). Most specimens of Hemibrycon paez differ from those of Hemibrycon boquiae, Hemibrycon yacopiae and Hemibrycon raqueliae by the possession of 19-23 anal-fin rays (vs. 23-29); readily distinguished from its congeners by having the mesopterygoid barely touching the metapterygoid (vs. overlapping the metapterygoid, except in Hemibrycon jabonero, Hemibrycon rafaelense and Hemibrycon guppyi) (Ref. 83529). Description: Dorsal fin ii,7-8; anal fin iii-iv,20-23; pectoral fin ii,10-11; pelvic fin ii,6 (Ref. 83529). | |||
| Biology: | Inhabits creeks with surface temperature 19.2-20.5°C, air temperature 18.8-22.8°C, dissolved oxygen 7.6-8.0mg/l, saturation 98-100%, clear water, width 5-6m, and substrate composed of stone, sand and decaying organic material (Ref. 83529). | |||
| IUCN Red List Status: | Data deficient (DD); Date assessed: 10 October 2014 Ref. (130435) | |||
| Threat to humans: | harmless | |||