Actinopterygii (ray-finned fishes) > Scorpaeniformes
(Scorpionfishes and flatheads) > Cottidae
Etymology: Thyriscus: Greek, thyris, -idos = a little door (Ref. 45335). More on authors: Gilbert & Burke.
Environment: milieu / climate zone / depth range / distribution range
Marine; demersal; depth range 100 - 800 m (Ref. 58496), usually 300 - 400 m (Ref. 56577). Polar; 50°N - 47°N (Ref. 57943)
North Pacific: North Kuril Islands (Ref. 56577), Bering Sea and the Aleutian Islands, Alaska.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 14.5 cm TL male/unsexed; (Ref. 56577); common length : 11.0 cm TL male/unsexed; (Ref. 56577); max. published weight: 35.00 g (Ref. 56577); max. reported age: 6 years (Ref. 56577)
Maximum depth reported at 800m (Ref. 50610).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Quast, J.C. and E.L. Hall, 1972. List of fishes of Alaska and adjacent waters with a guide to some of their literature. U.S. Dep. Commer., NOAA Tech. Rep. NMFS SSRF-658, 47 p. (Ref. 6876)
IUCN Red List Status (Ref. 120744)
CITES (Ref. 118484)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00708 (0.00302 - 0.01661), b=3.13 (2.93 - 3.33), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.4 ±0.3 se; Based on size and trophs of closest relatives
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Moderate vulnerability (36 of 100) .