Environment: milieu / climate zone / depth range / distribution range
Freshwater; demersal; amphidromous (Ref. 51243). Temperate; 40°N - 31°N
Asia: in mountain streams of Honshu, Shikoku and Kyushu, Japan.
Length at first maturity / Size / Weight / Age
Maturity: Lm 7.4, range 6 - 9.5 cm
Max length : 15.0 cm SL male/unsexed; (Ref. 559); max. reported age: 4 years (Ref. 74384)
Bottom-dwelling fish of mountain streams.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Masuda, H., K. Amaoka, C. Araga, T. Uyeno and T. Yoshino, 1984. The fishes of the Japanese Archipelago. Vol. 1. Tokai University Press, Tokyo, Japan. 437 p. (text). (Ref. 559)
IUCN Red List Status (Ref. 125652)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82804
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00661 (0.00299 - 0.01462), b=3.18 (2.99 - 3.37), 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. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (tm=2; Fec=200).
Fishing Vulnerability (Ref. 59153
): Low to moderate vulnerability (29 of 100).