Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Siluriformes
(Catfish) > Cetopsidae
(Whale catfishes) > Cetopsinae
Etymology: Cetopsidium: From Cetopsis, the first genus proposed in subfamily Cetopsinae, and 'idium' meaning diminutive, referring to the relatively small body sizes of the members of the genus..
Environment: milieu / climate zone / depth range / distribution range
Freshwater; demersal. Tropical
South America: Coastal rivers of northern South America between the Amazon and Orinoco Rivers.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 4.9 cm SL male/unsexed; (Ref. 36486)
Morphology | Morphometrics
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Vari, R.P., C.J. Ferraris Jr. and M.C.C. de Pinna, 2005. The neotropical whale catfishes (Siluriformes: Cetopsidae: Cetopsinae), a revisionary study. Neotrop. Ichthyol. 3(2):127-238. (Ref. 56045)
IUCN Red List Status (Ref. 115185)
CITES (Ref. 115941)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00457 (0.00185 - 0.01127), b=3.14 (2.92 - 3.36), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.4 ±0.4 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months ().
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .