Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Embiotocidae
Etymology: Amphistichus: Greek, amphi = on both sides + Greek, stix, -ichos = row (Ref. 45335); rhodoterus: From 'rodoteros' meaning rosy (Ref. 6885).
Environment: milieu / climate zone / depth range / distribution range
Marine; brackish; demersal; depth range 0 - 7 m (Ref. 2850). Temperate; 49°N - 35°N, 127°W - 120°W
Eastern Pacific: Vancouver Island, British Columbia, Canada to Avila Beach, central California, USA.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 41.0 cm TL male/unsexed; (Ref. 2850); max. reported age: 9 years (Ref. 56049)
(total): 9 - 10;
soft rays: 28 - 31. Caudal fin broadly forked (Ref. 6885). Generally silvery overlaid lightly with a brassy cast; light green above; sides with a series of about 9 to 11 narrow vertical dark bars, posteriorly, broken and staggered along the lateral line; caudal and anal fins red (Ref. 6885).
Adults are found in sand beaches in surf on exposed coast, sometimes in bays and backwaters (Ref. 2850). Viviparous, female carries the developing young (Ref. 205).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Viviparous, female carries the developing young (Ref. 205).
Eschmeyer, W.N., E.S. Herald and H. Hammann, 1983. A field guide to Pacific coast fishes of North America. Boston (MA, USA): Houghton Mifflin Company. xii+336 p. (Ref. 2850)
IUCN Red List Status (Ref. 115185)
CITES (Ref. 115941)
Threat to humans
Gamefish: yes; aquarium: public aquariums
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Preferred temperature (Ref. 115969
): 10.3 - 14, mean 12.1 (based on 57 cells).
Phylogenetic diversity index (Ref. 82805
= 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01349 (0.00810 - 0.02246), b=3.03 (2.88 - 3.18), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245
Trophic Level (Ref. 69278
): 3.4 ±0.5 se; Based on diet studies.
Resilience (Ref. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (tm=3; tmax=9; Fec=39).
Prior r = 0.21, 2 SD range = 0.04 - 1.01, log(r) = -1.56, SD log(r) = 0.79, Based on: 1 tgen, 1 tmax, 1 Fec records
Vulnerability (Ref. 59153
): Moderate vulnerability (44 of 100) .