Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Siluriformes
(Catfish) > Siluridae
Etymology: Silurus: Greek, silouros = a cat fish + Greek, odous = teeth (Ref. 45335). More on author: Linnaeus.
Environment / Climate / Range
Freshwater; demersal. Temperate; 5°C - 25°C (Ref. 13614); 53°N - 23°N, 95°E - 143°E
Length at first maturity / Size / Weight / Age
Maturity: Lm ?, range 35 - 37 cm
Max length : 130 cm TL male/unsexed; (Ref. 56557); common length : 37.0 cm SL male/unsexed; (Ref. 35840); max. published weight: 30.0 kg (Ref. 56557)
soft rays: 67 - 84. The side of the dorsal is dark grey; white stomach; with irregular white dots on the side. One pair of maxillary barbel, longer than the head; one pair of mandibular barbels, about 1/5-1/3 the length of the maxillary barbel (Ref. 40516).
Asia: Honshu, Shikoku and Kyushu in Japan, the Korean Peninsula, Taiwan, China, and Russia.
Commercially cultured in Japan. Adults feed on all types of fish (Ref. 41072).
Pairs manifest spawning embrace widely observed in other catfish species (Ref. 37360).
Details of reproductive behaviour from Katano, et al (1988): " A male first energeticaly pursued a female with its head near to the female's belly (chasing) and then began to cling to the female's body from the side, bending its tail or head (clinging). Finally the male enfolded the female's body, with its anus near to the female's (enfolding). In some cases, 2-4 males pursued a single female and two males enfolded a female at the same time. Although no aggressive behaviour was evident between males, it was always the largest male that could almost frequently approach and enfold the female. The mating pair moved a long distance in a ditch, paddy field and/or creek, performing reproductive activities."
The scattering of eggs may reduce the incidence of death of the young.
Kobayakawa, M., 1989. Systematic revision of the catfish genus Silurus, with description of a new species from Thailand and Burma. Jap. J. Ichthyol. 36(2):155-186. (Ref. 9417)
IUCN Red List Status (Ref. 96402)
CITES (Ref. 94142)
Threat to humans
Fisheries: commercial; aquaculture: commercial
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00398 (0.00216 - 0.00732), b=3.08 (2.91 - 3.25), based on LWR estimates for species & (Sub)Family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 4.4 ±0.3 se; Based on diet studies.
Resilience (Ref. 69278
): Low, minimum population doubling time 4.5 - 14 years (tm=4-5).
Vulnerability (Ref. 59153
): High to very high vulnerability (65 of 100) .