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Silurus asotus Linnaeus, 1758

Amur catfish
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Image of Silurus asotus (Amur catfish)
Silurus asotus
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Russian Federation country information

Common names: Amur catfish, Amurskii som, Far Eastern catfish
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Occurs in Lake Khanka and Amur river basin (Ref. 13397) and Sakhalin (Ref. 37812). This has been translocated to areas within the country for stocking in open waters. It has rapidly expanded its range and is now widely established in the country (Ref. 45022). Has also been introduced to the Baikal basin (Ref. 26334). nEurRus
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/rs.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Bogutskaya, N.G. and A.M. Naseka, 1996
National Database:

Common names from other countries

Classificação / Names Nomes comuns | Sinônimos | Catalog of Fishes(Gênero, Espécies) | ITIS | CoL | WoRMS | Cloffa

> Siluriformes (Catfishes) > Siluridae (Sheatfishes)
Etymology: Silurus: Greek, silouros = a cat fish + Greek, odous = teeth (Ref. 45335).
  More on author: Linnaeus.

Environment: milieu / climate zone / depth range / distribution range Ecologia

; Água doce demersal.   Temperate; 5°C - 25°C (Ref. 13614); 53°N - 23°N, 95°E - 143°E

Distribuição Países | Áreas da FAO | Ecossistemas | Ocorrências | Point map | Introduções | Faunafri

Asia: Honshu, Shikoku and Kyushu in Japan, the Korean Peninsula, Taiwan, China, and Russia.

Comprimento de primeira maturação / Tamanho / Peso / Idade

Maturity: Lm 36.0, range 35 - 37 cm
Max length : 130 cm TL macho/indeterminado; (Ref. 56557); common length : 37.0 cm SL macho/indeterminado; (Ref. 35840); peso máx. publicado: 30.0 kg (Ref. 56557)

Descrição suscinta Chaves de identificação | Morfologia | Morfometria

Raios dorsais (total) : 4; Raios anais : 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).

Biologia     Glossário (p.ex. epibenthic)

Commercially cultured in Japan. Adults feed on all types of fish (Ref. 41072). Recorded as having been or being farmed in rice fields (Ref. 119549).

Ciclo de vida ou comportamento de acasalamento Maturities | Reprodução | Spawnings | Egg(s) | Fecundities | Larvas

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.

Referência principal Upload your references | Referências | Coordenador | Colaboradores

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)

Status na Lista Vermelha da UICN (Ref. 130435)

  Segura ou pouco preocupante (LC) ; Date assessed: 17 February 2020

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Ameaça para os humanos

  Harmless




Uso pelos humanos

Pescarias: espécies comerciais; Aquacultura: espécies comerciais
FAO(Aquaculture systems: produção; ; publication : search) | FishSource |

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Trophic ecology
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Estimates based on models

Índice de diversidade filogenética (Ref. 82804):  PD50 = 0.5001   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00589 (0.00500 - 0.00694), b=3.01 (2.96 - 3.06), in cm Total Length, based on LWR estimates for this species (Ref. 93245).
Nível Trófico (Ref. 69278):  4.4   ±0.3 se; based on diet studies.
Resiliência (Ref. 120179):  Baixo, tempo mínimo de duplicação da população 4,5 - 14 anos (tm=4-5; K=0.11).
Fishing Vulnerability (Ref. 59153):  High to very high vulnerability (65 of 100).
Categoria de preço (Ref. 80766):   Unknown.