Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) >
Kurtiformes (Nurseryfishes, cardinalfishes.) >
Apogonidae (Cardinalfishes) > Apogoninae
Etymology: quartus: From the Latin quartus, fourth, in reference to the longest dorsal spine.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; demersal; depth range ? - 61 m (Ref. 37581). Tropical
Western Indian Ocean: Saya de Malha Bank.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Short description
Identification keys | Morphology | Morphometrics
Dorsal spines (total): 8; Dorsal soft rays (total): 9; Anal spines: 2; Anal soft rays: 8; Vertebrae: 24. Generally smooth to crenulate preopercle edge, one predorsal scale, 13 well-developed gill rakers on first arch, fourth dorsal spine the longest, and a single dark spot, perhaps appearing as an ocellus in life, on the body just behind the opercle flap. Remarks: caudal fin slightly rounded.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Mouthbrooders (Ref. 240). Distinct pairing during courtship and spawning (Ref. 205).
Fraser, T.H., 2000. A new species of Apogon (Perciformes: Apogonidae) from the Saya de Malha Bank, Indian Ocean, with redescriptions of Apogon regani Whitley, 1951, A. gardineri Regan, 1908, and A. heraldi (Herre, 1943). Proc. Biol. Soc. Wash. 113(1):249-263. (Ref. 37581)
IUCN Red List Status (Ref. 130435: Version 2025-2 (Global))
Threat to humans
Harmless
Human uses
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Estimates based on models
Phylogenetic diversity index (Ref. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00708 (0.00304 - 0.01646), b=3.22 (3.02 - 3.42), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Trophic level (Ref. 69278) |
3.5 ±0.6 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.). |
Fishing Vulnerability (Ref. 59153) |
Low vulnerability (17 of 100). 🛈 |