Common names from other countries
分類 / Names
共通名の | 類義語 | Catalog of Fishes(部類, 種) | ITIS | CoL | WoRMS | Cloffa
Environment: milieu / climate zone / depth range / distribution range
生態学
; 新鮮な水 底生の. Temperate; 5°C - 25°C (Ref. 13614); 53°N - 23°N, 95°E - 143°E
Asia: Honshu, Shikoku and Kyushu in Japan, the Korean Peninsula, Taiwan, China, and Russia.
Length at first maturity / サイズ / 重さ / 年齢
Maturity: Lm 36.0, range 35 - 37 cm
Max length : 130 cm TL オス/雌雄の選別がない; (Ref. 56557); common length : 37.0 cm SL オス/雌雄の選別がない; (Ref. 35840); 最大公表体重: 30.0 kg (Ref. 56557)
背鰭 (合計) : 4; 臀鰭: 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 | 繁殖 | Spawnings | Egg(s) | Fecundities | 幼生
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)
CITES (Ref. 128078)
Not Evaluated
Human uses
水産業: 商業; 水産養殖: 商業
用具
特記事項
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インターネットの情報源
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 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).
栄養段階 (Ref.
69278): 4.4 ±0.3 se; based on diet studies.
回復力 (Ref.
120179): 低い, ４．５年～１４年の倍増期間の最小個体群 (tm=4-5; K=0.11).
Fishing Vulnerability (Ref.
59153): High to very high vulnerability (65 of 100).
