Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Siluriformes
(Catfish) > Sisoridae
(Sisorid catfishes) > Sisorinae
Etymology: Sisor: Local name for the fish in Bengal and Bihar; chennuah: From the local name of the fish, Chennuah.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; demersal. Tropical
Asia: Brahmaputra River drainage in India.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 9.8 cm SL male/unsexed; (Ref. 55921)
Morphology | Morphometrics
soft rays: 6;
Vertebrae: 32 - 34. Differs from Sisor rabdophorus and Sisor rheophilus in possessing a deeper body (body depth at anus 5.6-5.8% SL vs. 4.2-5.4). Can be differentiated further from Sisor rheophilus in having a wider head (15.7-15.9% SL vs. 14.5-14.8), shorter snout (54.0-55.9% HL vs. 56.2-60.3), smaller eye (9.9-11.4% HL vs. 13.2-16.3), fewer serrations on posterior edge of pectoral spine (10 vs. 7-22) and wider nuchal plate (width 1.1-1.2 times length vs. width equal to length), and from Sisor torosus in having a more slender body (body depth at anus 5.6-5.8% SL vs. 6.0-7.8) (Ref. 55921).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Ng, H.H., 2003. A revision of the south Asian sisorid catfish genus Sisor (Teleostei: Siluriformes). J. Nat. Hist. 37:2871-2883. (Ref. 55921)
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
= 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00490 (0.00214 - 0.01119), b=3.08 (2.88 - 3.28), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.3 ±0.5 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months ().
Vulnerability (Ref. 59153
): Moderate vulnerability (37 of 100) .