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Corydoras knaacki Tencatt & Evers, 2016 Knaacks cory |
| Family: | Callichthyidae (Callichthyid armored catfishes), subfamily: Corydoradinae | |||
| Max. size: | 3.96 cm SL (male/unsexed) | |||
| Environment: | demersal; freshwater | |||
| Distribution: | South America: Río Madre de Dios basin, Peru. | |||
| Diagnosis: | Dorsal spines (total): 2-2; Dorsal soft rays (total): 7-8; Anal soft rays: 7-9. Corydoras knaacki is distinguished from its congeners by having the following combination of characters: a longitudinal black stripe along midline of flank; short mesethmoid, with anterior portion smaller than 50% of the bone length; serrations on posterior margin of pectoral spine directed towards the tip of the spine; dorsal fin with the region of the first branched ray, including membrane, with black pigmentation, the remaining areas with irregular black blotches; lacking a vertically elongated black blotch across the eyes; snout with conspicuously rounded moderately-developed black spots; and ventral expansion of infraorbital 1 moderately developed (Ref. 121196). | |||
| Biology: | ||||
| IUCN Red List Status: | Not Evaluated (N.E.) Ref. (130435) | |||
| Threat to humans: | harmless | |||