Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Actinopteri (ray-finned fishes) > 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
Freshwater; demersal; depth range - m (Ref. ), usually - m (Ref. ). Tropical; 0°C -
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)
Morphology | Morphometrics
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. 124695)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref. 93245
Trophic level (Ref. 69278
): 2.3 ±0.1 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (20 of 100) .