Chinese Taipei (Taiwan) country information

Common names: [No common name]
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: commercial | Ref: Kuo, S.-R., H.-J. Lin and K.-T. Shao, 1999
Aquaculture: commercial | Ref: Liao, C.-I., H.-M. Su and E.Y. Chang, 2001
Regulations: | Ref:
Uses: live export: yes;
Comments: Collected from a mangrove creek in Shin-Feng, northwestern Taiwan (Ref. 48455). First successful larviculture in Taiwan occurred in 1971 (Ref. 40297). Also Ref. 559.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/tw.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Shen, S.C. (ed.), 1993
National Database: The Fish Database of Taiwan

Common names from other countries

Сом амурский, 鲶, Japanese catfish, ... more

Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > 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 Ecology

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

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

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

Length at first maturity / Size / Weight / Age

Maturity: L_m 36.0, 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)

Short description Identification keys | Morphology | Morphometrics

Dorsal soft rays (total): 4; Anal 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).

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).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

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.

Main reference Upload your references | References | Coordinator | Collaborators

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. 130435)

Least Concern (LC) ; Date assessed: 17 February 2020

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

Fisheries: commercial; aquaculture: commercial

FAO(Aquaculture systems: production; ; publication : search) | FishSource |

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Estimates based on models

Phylogenetic diversity index (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).

Trophic level (Ref. 69278): 4.4 ±0.3 se; based on diet studies.

Resilience (Ref. 120179): Low, minimum population doubling time 4.5 - 14 years (tm=4-5; K=0.11).

Fishing Vulnerability (Ref. 59153): High to very high vulnerability (65 of 100).

Price category (Ref. 80766): Unknown.

Silurus asotus Linnaeus, 1758