Scorpiodoras calderonensis (Vaillant, 1880)
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Family:  Doradidae (Thorny catfishes), subfamily: Astrodoradinae
Max. size:  15.07 cm SL (male/unsexed)
Environment:  demersal; freshwater
Distribution:  South America: upper Amazon basin, including the Rio Solimões and lower portions of its tributaries, such as the Juruá, Japurá, and Tefé rivers.
Diagnosis:  Dorsal spines (total): 3-3; Dorsal soft rays (total): 6-6; Vertebrae: 34-34. Scorpiodoras calderonensis differs from its congeners S. heckelii and S. liophysus by having secondary gas bladder terminally extended by elongate diverticulum 'recurved like the whip of a scorpion' (vs. secondary gas bladder absent in S. liophysus and without elongate terminal diverticulum in S. heckelii). It is further distinguished from S. heckelii by having a relatively small eye, diameter 63-93% of interorbital width (vs. relatively large eye, diameter 91- 129% of interorbital width) and from S. liophysus by possessing relatively shallow scutes, depth 41-59% of body depth near anal-fin origin (vs. 61-72%) (Ref. 86601). Description: anal fin iv-v,7-9 (Ref. 86601).
IUCN Red List Status: Not Evaluated (N.E.) Ref. (123251)
Threat to humans:  harmless
Country info:   

Entered by: Torres, Armi G. - 03.07.17
Checked by: Bailly, Nicolas - 23.05.21

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