Actinopteri (ray-finned fishes) > Acropomatiformes
(Oceanic basses) > Epigonidae
Etymology: Epigonus: Greek, epi = over, in front + Greek, gonio = angle (Ref. 45335); tuberculatus: Name from Latin word 'tuber' meaning swelling, referring to the tubercle found on the inner symphysis of the lower jaw.
Environment: milieu / climate zone / depth range / distribution range
Marine; pelagic-oceanic; depth range 473 - 570 m (Ref. 93890). Tropical
Eastern Indian Ocean: Cocos-Keeling Is.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 15.4 cm SL (female)
Morphology | Morphometrics
Vertebrae: 25. This species is distinguished by the following set of characters: no opercular spine; ribs on the last abdominal vertebra reduced or absent; tongue toothless; no maxillary mustache-like process; tubercle on inner symphysis of lower jaw; total gill rakers 21-22; vertebrae 10 + 15; pored lateral-line scales 46-48 + 3-4; D VII-I,10; pectoral-fin rays 19-20; pyloric caeca 8-10; orbital diameter 14.5-15.4 % SL; length of lower-jaw 16.0-17.6 % SL (Ref. 93890).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
The type specimens are both females with a great number of eggs at several developmental stages; the most developed eggs were ca. 0.5 mm in diameter, round with a single oil globule.
Okamoto, M. and H. Motomura, 2013. Two new species of deepwater cardinalfish from the Indo-Pacific, with a definition of the Epigonus pandionis group (Perciformes: Epigonidae). Ichthyol. Res. 60(4):301-311. (Ref. 93890)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00589 (0.00246 - 0.01407), b=3.12 (2.91 - 3.33), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.4 ±0.5 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low to moderate vulnerability (33 of 100) .