Actinopteri (ray-finned fishes) > Perciformes/Cottoidei
(Sculpins) > Cottidae
Etymology: Astrocottus: Greek, astra = ray + Greek, kottos = a fish (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Marine; bathydemersal; depth range 394 - 420 m (Ref. 27311). Temperate
Northwest Pacific: known only from Japan.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 5.0 cm SL male/unsexed; (Ref. 559)
(total): 9 - 10;
soft rays: 17 - 18;
Vertebrae: 33 - 35. This species possess the following set of characters: small head, its length 29-32% SL, depth
13-18% SL; barely concave interorbital space, slightly narrow, its width 4.8-7.7% HL; basal length of anal fin 38-42% SL; scales on chin and pectoral-fin rays absent, small scales scattered on ventral surface of trunk; a nuchal cirrus short; cirrus absent below lateral line; D1 IX-X (mode IX), D2 14-16 (mode 15); A 17-18 (mode 17); lateral-line scales 33-35 (mode 34); vertebrae 12 + 21-23 (mode 12 + 22) =33-35 (mode 34) (Ref. 76844).
Occurs on sandy and/or cobble bottoms (Ref. 76844).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Tsuruoka, O., S. Maruyama and M. Yabe, 2008. Revision of the Cottid Genus Astrocottus Bolin (Perciformes: Cattoidei), with the description of a new species from Northern Japan. Bull. Natl. Mus. Sci. Ser. A. Suppl. 2:25-37. (Ref. 76844)
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
): 1.8 - 7.6, mean 3.2 °C (based on 62 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00708 (0.00298 - 0.01684), 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
): 3.2 ±0.5 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 vulnerability (24 of 100) .