Actinopterygii (ray-finned fishes) > Gasterosteiformes
(Sticklebacks and seamoths) > Hypoptychidae
Etymology: Hypoptychus: Greek, hypo = under + Greek, ptyx, -ichos = fold (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Marine; benthopelagic. Temperate; 67°N - 32°N
North Pacific: Sakhalin, Russia to northern Japan.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 10.0 cm TL male/unsexed; (Ref. 56557); max. reported age: 1 years (Ref. 26245)
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. 119314)
CITES (Ref. 115941)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Preferred temperature (Ref. 115969
): 0.8 - 16.3, mean 7.6 (based on 74 cells).
Phylogenetic diversity index (Ref. 82805
= 1.2500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00302 (0.00114 - 0.00797), b=3.12 (2.89 - 3.35), 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. 69278
): High, minimum population doubling time less than 15 months (K=3.6-4.0; tmax=1).
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .