Actinopterygii (ray-finned fishes) > Scorpaeniformes
(Scorpionfishes and flatheads) > Cottidae
Etymology: Astrocottus: Greek, astra = ray + Greek, kottos = a fish (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Marine; brackish; demersal; depth range 10 - 15 m (Ref. 76844). Temperate
Northwest Pacific: Japan.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 5.0 cm SL male/unsexed; (Ref. 559)
Morphology | Morphometrics
soft rays: 11 - 12;
Vertebrae: 29 - 31. This species possess the following set of characters: slightly large head, its length 36-38% SL, depth 20-26% SL; flat interorbital space flat, relatively wide, its width 7.8-9.7% HL; basal length of anal fin 25-29% SL; pectoral-fin rays with small scales except the lowermost part; numerous small scales cover widely the ventral surface of head and trunk; no nuchal cirrus; scattered below lateral line are long filamentous cirri; D1 IX, D2 12; A 11-12 (mode 12); lateral-line scales 29-31 (mode 31); vertebrae 12 + 17-19 (mode 12 +18) = 29-31 (mode 30) (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. 120744)
CITES (Ref. 118484)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00724 (0.00309 - 0.01700), b=3.13 (2.92 - 3.34), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.2 ±0.3 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) .