Exallodontus aguanai Lundberg, Mago-Leccia & Nass, 1991
Exallodontus aguanai
photo by Ros, W.

Family:  Pimelodidae (Long-whiskered catfishes)
Max. size:  20 cm SL (male/unsexed)
Environment:  demersal; freshwater; depth range 20 - 30 m
Distribution:  South America: Amazon and Orinoco River basins.
Diagnosis:  Dorsal spines (total): 2-2; Dorsal soft rays (total): 6-6; Anal soft rays: 11-14; Vertebrae: 46-50. Distinguished by having 2-3 rows of heavy, firmly attached conical teeth on premaxillae and dentaries; lacrimal (= infraorbital 1+2) shaped as an obtuse-angled triangle with nearly straight sides; relatively long, nearly straight-margined adipose fin (its length 2.0-2.5 in SL); short dorsal fin spine, low dorsal fin (spine length 5.6-8.6 in SL); relatively small head (head length 4.0-5.2 times in SL); small eye (horizontal diameter 3.4-5.5 times in snout length, 7.4-12.0 times in head length); neural spines of vertebrae 13 or 14 - 23 or 24 oriented 90┬░to horizontal axis of centra; supraoccipital process with a narrow median keel above somewhat concave sides, markedly angular in cross-section, slender and tapering to its peg-and-socket joint with supraneural (basal width of supraoccipital process about 2 times in length); anterior anal-fin rays broad, forming a paddle-like blade; posterior nostril ovoid, its long axis oriented transversely (Ref. 57763).
Biology: 
IUCN Red List Status: Not Evaluated (N.E.) Ref. (123251)
Threat to humans:  harmless
Country info:   
 

Entered by: Torres, Armi G. - 28.06.99
Modified by: Garilao, Cristina V. - 01.06.15
Checked by: Lundberg, John G. - 10.11.01

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