Actinopteri (ray-finned fishes) > Perciformes/Zoarcoidei
(Eelpouts and pricklebacks) > Pholidae
(Gunnels) > Apodichthyinae
Etymology: Rhodymenichthys: Greek, rhodon, -ou = rose + Greek, hymen = membrane + Greek, ichthys = fish (Ref. 45335). More on author: Pallas.
Environment: milieu / climate zone / depth range / distribution range
Marine; benthopelagic; depth range 0 - 148 m (Ref. 50550). Temperate
North Pacific: Niigata and Iwate Prefecture, Japan to Primorskii Krai, Sakhalin and the Commander Islands, Russia. Also recorded from the Bering Sea to the Aleutian Islands (Ref. 265). Reported from South Korea (Ref. 77001).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 25.0 cm TL male/unsexed; (Ref. 56557)
Morphology | Morphometrics
(total): 80 - 96;
soft rays: 40 - 51;
Vertebrae: 87 - 101. One pore on interorbital region; pelvic fin present; a narrow silvery longitudinal band runs from eye to base of pectoral fin; body color greatly variable, with brown, green, light-purple etc (Ref. 559).
Lives in seaweed areas of the intertidal zone (Ref. 559).
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. 123251)
CITES (Ref. 123416)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 1.4 - 12.8, mean 6.3 °C (based on 190 cells).
Phylogenetic diversity index (Ref. 82805
= 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00102 (0.00046 - 0.00225), b=3.06 (2.88 - 3.24), in cm total length, based on all LWR estimates for this body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.4 ±0.4 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low to moderate vulnerability (26 of 100) .