Actinopteri (ray-finned fishes) > Osmeriformes
(Freshwater smelts) > Osmeridae
Etymology: Hypomesus: Greek, hypo = under + Greek,mesos = a half (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Marine; freshwater; brackish; demersal; anadromous (Ref. 37812); depth range 0 - 50 m (Ref. 50550). Temperate
Northwest Pacific: Korean Peninsula and northern Japan to the Kuril Islands and Peter the Great Bay (Russia).
Length at first maturity / Size / Weight / Age
Maturity: Lm 9.0  range ? - ? cm
Max length : 25.0 cm TL male/unsexed; (Ref. 56527); max. published weight: 158.00 g (Ref. 56527); max. reported age: 8 years (Ref. 56527)
soft rays: 14 - 19;
Vertebrae: 59 - 64. Vomer large, with broad, bifurcated posterior process; periphery of glossohyal bone with row of conical teeth, a few similar teeth located more centrally; pyloric caeca 6(4-7); base of adipose fin less than 20% of head length; eye small; adipose eyelid poorly developed.
A marine-coastal species; spawning occurs in May on beaches (Ref. 33312). Anadromous (Ref. 37812).
Spawn on beaches.
Saruwatari, T., J.A. López and T.W. Pietsch, 1997. A revision of the ormerid genus Hypomesus Gill (Teleostei: Salmoniformes), with a description of a new species from the southern Kuril Islands. Species Diversity 2:59-82. (Ref. 33312)
IUCN Red List Status (Ref. 125652)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 123201
): 2.3 - 19.4, mean 10.1 °C (based on 114 cells).
Phylogenetic diversity index (Ref. 82804
= 0.5313 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00363 (0.00177 - 0.00744), b=3.18 (3.00 - 3.36), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.3 ±0.4 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (tm=1; tmax=4).
Fishing Vulnerability (Ref. 59153
): Low to moderate vulnerability (30 of 100).