Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > Kurtiformes (Nurseryfishes, cardinalfishes.) > Apogonidae (Cardinalfishes) > Pseudamiinae
Etymology: Gymnapogon: Greek, gymnos = naked + Greek, pogon = beard (Ref. 45335); janus: Named after Janus, the Roman god of gates and doors, represented by two faces, referring to the rounded caudal fin when scales have been sloughed off for some specimens of Pseudamia but with internal characters and preopercle spine of Gymnapogon.
Eponymy: Janus was a Roman God of beginnings and endings, usually depicted as having two faces. [...] (Ref. 128868), visit book page.

Environment: milieu / climate zone / depth range / distribution range Ecology

Marine; benthopelagic; depth range 0 - 38 m (Ref. 107874). Tropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Western Central Pacific: Philippines.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 6.3 cm SL male/unsexed; (Ref. 107874)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 7; Dorsal soft rays (total): 10; Anal spines: 2; Anal soft rays: 9 - 10; Vertebrae: 24. This species is distinguished by the following characters: A 9-10 with anterior-most ray unbranched; D 10, the two anterior-most rays unbranched; pectoral fins 14, 9 branched and 5 unbranched; caudal fin rounded, principal caudal rays 17. 15 branched; vomer with one row of two villiform teeth on each side (Ref. 107874).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

Fraser, T.H., 2016. A new species of cardinalfish (Gymnapogon, Gymnapogonini, Apogonidae, Percomorpha) from Philippines. Zootaxa 4107(3):431-438. (Ref. 107874)

IUCN Red List Status (Ref. 130435: Version 2024-1)

Data deficient (DD) ; Date assessed: 14 August 2023

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

More information

Trophic ecology
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Ecology
Ecology

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Length-weight rel.
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Life cycle
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Maturity/Gills rel.
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Anatomy
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Genetics
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Stamps, coins, misc.

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Internet sources

Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = No PD50 data [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): 3.4 ±0.5 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 (10 of 100).

Gymnapogon janus Fraser, 2016