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Knodus guajajara Aguiar, Brito, Ottoni & Guimarães, 2022 |
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photo by
Aguiar, R.G. et al., 2022 |
| Family: | Stevardiidae (Stevardiids), subfamily: Diapominae | |||
| Max. size: | 3.69 cm SL (male/unsexed) | |||
| Environment: | benthopelagic; freshwater | |||
| Distribution: | South America: Brazil. | |||
| Diagnosis: | Dorsal soft rays (total): 7-8; Anal soft rays: 20-25; Vertebrae: 33-35. This species is distinguished from its congeners by the following set of characters: complete lateral line; caudal fin lobes with sparse chromatophores and absence of basal blotches; 20-25 branched rays in the anal-fin (mode 23); single humeral spot; conspicuous round humeral blotch; hyaline dorsal-fin; 4 or 5 rows of scales between the lateral line and the dorsal-fin origin; 12 or 13 scales in the median series between the tip of the supraoccipital spine and the dorsal-fin origin; 3 to 5 maxillary teeth; 3 or 4 tricuspid teeth in the premaxillary outer row; 3 to 5 maxillary teeth; 3 to 5 cusps on the teeth of the inner row of the premaxilla; 12 circumpeduncular scales; and total vertebrae 33-35, mode 34 (Ref. 128405). | |||
| Biology: | ||||
| IUCN Red List Status: | Not Evaluated (N.E.) Ref. (130435) | |||
| Threat to humans: | harmless | |||