Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Stichaeidae
(Pricklebacks) > Xiphisterinae
Etymology: Alectrias: Greek, alektros, -os, -on = single, married in illegal or unhappy marriage (Ref. 45335); markevichi: Named for Aleksandr Igorevich Markevich, worker of the Far Eastern Marine Biosphere Reserve, Far Eastern Branch, Russian Academy of Sciences (Vladivostok).
Environment: milieu / climate zone / depth range / distribution range
Marine; pelagic-neritic; depth range 0 - 50 m (Ref. 91064), usually 30 - 50 m (Ref. 91064). Temperate
Northwest Pacific: Japan, Peter the Great Bay and Moneron Island (the Sea of Japan), South Kuril Strait.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 6.6 cm SL male/unsexed; (Ref. 91064)
Morphology | Morphometrics
soft rays: 43 - 44;
Vertebrae: 66 - 68. This species is distinguished by the following characters: thin and elongated body, its depth 10.2-14.1 (12.9) times in SL; small head, 6.6-8.0 (7.2) times in SL; small pectoral and caudal fins, 2.5-4.0 (3.0) and 1.9-2.7 (2.2) times HL, respectively; occipital commissure with 3 pores almost at the straight line; no pores near crest base and no medial tubule; postorbital canal usually with 6 pores (usually pore po2 is absent); preopercular canal with 4 pores; skinny crest on head with a smooth upper profile - in females, it is highest in the middle, while in males, it is highest near the posterior margin; distance between the anterior margin of medial pore of OC and origin of D is large, 0..5-9 (0.7) times in horizontal orbit diameter; scales present behind 2nd-8th ray of anal fin; D 62-63. P 7-9. V. 66-68; 13-16 spines of dorsal fin are thin and bending, at its end, there is only one shortened spine; anal fin begins under the 19th-21st ray of dorsal fin, its last ray is connected by a membrane with caudal fin 75-90 (85.4)% of its length; caudal fin with 8-11 branched rays; no branched rays on epural3; preural vertebrae with wide neural processes 11-18, and those with hemapophyseal plate 9-12; vertebrae with hemapophyseal plate, neural processes are noticeably shorter than hemal ones; top of head covered with small brown spots (Ref. 91064).
Found on rocky littoral formed of slightly flattened stones, 30-60 cm, with narrow slits that are partially filled with sand, gravel ad small stones. Stomachs contain small gastropods (Ref. 91064).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Sheiko, B.A., 2012. Alectrias markevichi sp. nov. - A new species of cockscombs (Perciformes: Stichaeidae: Alectriinae) from the sublittoral of the sea of Japan and adjacent waters. J. Ichthyo. 52(5):308-320. (Ref. 91064)
IUCN Red List Status (Ref. 115185)
CITES (Ref. 115941)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm Total Length, based on all LWR estimates for this body shape (Ref. 93245
Trophic Level (Ref. 69278
): 2.8 ±0.2 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (24 of 100) .