Actinopterygii (ray-finned fishes) > Scorpaeniformes
(Scorpionfishes and flatheads) > Cyclopteridae
Etymology: Eumicrotremus: Greek, eu = good + Greek, mikros = little, small + Greek, trema = hole (Ref. 45335).
Environment / Climate / Range
Marine; demersal; depth range 0 - 575 m (Ref. 6793). Temperate, preferred ?; 66°N - 46°N
North Pacific: Chukchi Sea and Sea of Okhotsk to Muroran, Hokkaido (Japan), Amchitka Island in the Aleutian chain and Puget Sound, Washington, USA.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 18.0 cm TL male/unsexed; (Ref. 56527); max. published weight: 100.00 g (Ref. 56527)
(total): 6 - 7;
soft rays: 8 - 10. Caudal narrow and rounded; pectorals with a long base extended to ventral surface, all rays slightly exserted, ventral ones more so; pelvic fins with rays ossified and modified to support all of a large adhesive disc with thickened fringed margin (Ref. 6885). Light to dark green, sometimes light brown dorsally; light brown or plum ventrally; lips lavender; tubercles in males dull orange or reddish brown; tubercles in females are larger and more numerous and pale green (Ref. 6885).
Commonly inshore; often found at low tide attached to rocks (Ref. 2850).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Eschmeyer, W.N., E.S. Herald and H. Hammann, 1983. A field guide to Pacific coast fishes of North America. Houghton Mifflin Company, Boston, U.S.A. 336 p. (Ref. 2850)
IUCN Red List Status (Ref. 109396)
CITES (Ref. 94142)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02512 (0.00996 - 0.06336), b=3.01 (2.78 - 3.24), based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.2 ±0.42 se; Based on food items.
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low to moderate vulnerability (27 of 100) .