Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Epigonidae
Etymology: Epigonus: Greek, epi = over, in front + Greek, gonio = angle (Ref. 45335); machaera: Name from Latin meaning sword, referring to the slender body of the species.
Environment / Climate / Range
Marine; bathydemersal; depth range 727 - 809 m (Ref. 91119). Deep-water, preferred ?
Southwest Pacific: Chatham Rise, east of New Zealand.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 17.4 cm SL male/unsexed; (Ref. 91119); 17.4 cm SL (female)
Morphology | Morphometrics
soft rays: 9;
Vertebrae: 25. This species is distinguished by the following set of characters: presence or a pungent opercular spine; maxillary mustache-like process blunt; ribs on the last abdominal vertebra; two round nub-like structures present on symphysis of lower jaw; tongue narrow and sword-like, no teeth; gill rakers 7-9 + 20-21 = 28-30; vertebrae 11 + 14; total pored lateral-line scales 49-54 (hypural end 45-50 + caudal fin 4-5); scales below lateral line 9-10; D VII-I,9; pectoral-fin rays 16-17; pyloric caeca 7; head length 31.9-34.6 % SL; body depth 20.5-22.6 % SL; lower-jaw length 13.5-14.5 % SL; second dorsal-fin spine length 12.7-14.7 % SL; and second anal-fin spine length 12.7-15.5 % SL (Ref. 91119).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Okamoto, M., 2012. Two new species of the genus Epigonus (Perciformes: Epigonidae) from the South Pacific, with a definition of the Epigonus constanciae group. Ichthyol. Res. 59(3):242-254. (Ref. 91119)
IUCN Red List Status (Ref. 109396)
CITES (Ref. 94142)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01230 (0.00558 - 0.02710), b=3.01 (2.82 - 3.20), based on LWR estimates for this Genus-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.4 ±0.5 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Moderate vulnerability (36 of 100) .