Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Siluriformes
(Catfish) > Ariidae
(Sea catfishes) > Ariinae
Etymology: Cathorops: Greek, kathorao = to observe, to watch + Greek, ops = appearance (Ref. 45335). More on author: Günther.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; benthopelagic. Tropical
Central America: Rio Motagua, Guatemala; probably in the Honduran portion of the rio Motagua near itsmouth. Reports from Mexico, Nicaragua, Costa Rica and Panama by previous authors are erroneous.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 23.0 cm TL male/unsexed; (Ref. 58022)
Morphology | Morphometrics
soft rays: 19 - 20. Distinguished from all other species of Cathorops by the possession of the following features: gill rakers on first arch 16-18; anal fin with 19-20 rays; snout length 5.3-5.5% SL; and posterior margin of pectoral-fin spine with prominent serrations, except in Cathorops aguadulce, Cathorops kailolae, Cathorops multiradiatus, and Cathorops tuyra. Can be further differentiated from other congeners by the following combination of characters: distance from tip of snout to dorsal-fin origin 30.0-32.6% SL; distance from tip of snout to posterior margin of dorsomedian groove of neurocranium 17.9-19.1% SL; absence of fleshy papillae intercalated with gill rakers on first two arches; head length 22.3-23.0% SL; distance between lateral cornu of lateral ethmoid and external limb of supracleithrum 19.3-19.6% SL; distance between the anterior nostrils 3.6-4.4% SL; distance between posterior nostrils 4.4-5.1% SL; orbital diameter 4.5-5.0% SL; interorbital distance 11.1-12.1% SL; mouth width 8.9-9.7% SL; premaxilla width 5.1-5.8% SL; intense black pigmentation on pelvic fin; distance from tip of snout to pelvic-fin origin 46.2-49.1% SL; dorsal-fin spine length 17.2-18.1% SL; caudal-peduncle height 8.7-9.0% SL; width of cephalic shield at supracleithrum area 16.7-16.9% SL; and body width 19.6-20.1% SL (Ref. 75004).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Marceniuk, A.P. and C.J. Ferraris Jr., 2003. Ariidae (Sea catfishes). p. 447-455. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the freshwater fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 39852)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 118484)
Threat to humans
Traumatogenic (Ref. 58010)
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00871 (0.00535 - 0.01418), b=3.09 (2.95 - 3.23), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245
Trophic level (Ref. 69278
): 4.3 ±0.8 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low to moderate vulnerability (29 of 100) .