Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) >
Siluriformes (Catfishes) >
Doradidae (Thorny catfishes) > Astrodoradinae
Etymology: Scorpiodoras: Latin, scorpaena = a kind of fish, 1706 + Greek, dora = skin (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; demersal. Tropical
South America: upper Amazon basin, including the Rio Solimões and lower portions of its tributaries, such as the Juruá, Japurá, and Tefé rivers.
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 15.1 cm SL male/unsexed; (Ref. 86601)
Short description
Identification keys | Morphology | Morphometrics
Dorsal spines (total): 3; Dorsal soft rays (total): 6; Vertebrae: 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).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Sousa, L.M. and J.L.O. Birindelli, 2011. Taxonomic revision of the genus Scorpiodoras (Siluriformes: Doradidae) with resurrection of Scorpiodoras calderonensis and description of a new species. Copeia 2011(1):121-140. (Ref. 86601)
IUCN Red List Status (Ref. 130435: Version 2025-2)
Threat to humans
Harmless
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