Actinopterygii (ray-finned fishes) > Scorpaeniformes
(Scorpionfishes and flatheads) > Cyclopteridae
Etymology: Lethotremus: Greek, letheia = apathetic + Greek, trema, -atos = hollow, hole (Ref. 45335). More on authors: Jordan & Snyder.
Environment: milieu / climate zone / depth range / distribution range
Marine; demersal; depth range 0 - 20 m (Ref. 58496). Temperate
Northwest Pacific: east coast of central Japan and Yellow Sea near Chefoo (China) , with no records from the intervening area.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 2.0 cm SL male/unsexed; (Ref. 559)
Feeds on crabs (Ref. 9137).
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. 120744)
CITES (Ref. 118484)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 18.7 - 22.4, mean 20.6 (based on 97 cells).
Phylogenetic diversity index (Ref. 82805
= 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.03090 (0.01192 - 0.08009), b=2.99 (2.77 - 3.21), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.5 ±0.50 se; Based on food items.
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .