Hapalogenys filamentosus, Philippine dark velvetchin

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Hapalogenys filamentosus Iwatsuki & Russell, 2006

Philippine dark velvetchin
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Hapalogenys filamentosus   AquaMaps   Data sources: GBIF OBIS
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drawing shows typical species in Lobotidae.

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

Teleostei (teleosts) > Acanthuriformes (Surgeonfishes) > Lobotidae (Tripletails)
Etymology: Hapalogenys: Greek, hapalos = soft * Greek, geny, -yos = face (Ref. 45335);  filamentosus: The specific name refers to the filamentous first ray of the pelvic fin of this species..

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

Marine; benthopelagic; depth range 30 - 80 m (Ref. 76777). Tropical

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

Western Central Pacific: off Iloilo Panay Island, Philippines.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 14.9 cm SL male/unsexed; (Ref. 76777)

Short description Morphology | Morphometrics

Dorsal spines (total): 11; Dorsal soft rays (total): 14; Anal spines: 3; Anal soft rays: 9. Distinguished from other congeners by the following combination of characters: lower lip fleshy with dense cluster of very short papillae, scaly posteriorly (on posterior abdominal part of angular of lower jaws); presence of 10 unobstructed pores on and behind chin; maxilla without scales; body with 2 faint longitudinal dark stripes, 1st from nape to base of mid dorsal-fin soft rays, 2nd from eye to base of last dorsal-fin soft ray, their width below base of 5th and 6th dorsal-fin spines clearly narrower than pupil diameter in 6.5-15.8 cm SL; soft rayed portions of dorsal and anal fins somewhat rounded posteriorly and slightly angulated posteriorly, respectively; pelvic-fin tip almost reaching to or slightly beyond base of 1st anal-fin spine when depressed; pored lateral-line scales 41 or 42; a procumbent spine-like process (exposed tip of 1st pterygiophore) apparent at origin of dorsal fin but covered by predorsal scales (Ref. 76777).

Biology     Glossary (e.g. epibenthic)

The habitat is likely to be dominated by a muddy rocky bottom (Ref. 76777).

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

Main reference Upload your references | References | Coordinator | Collaborators

Iwatsuki, Y. and B.C. Russell, 2006. Revision of the genus Hapalogenys (Teleostei: Perciformes) with two new species from the Indo-West Pacific. Mem. Mus. Victoria 63(1):29-46. (Ref. 76777)

IUCN Red List Status (Ref. 130435)

  Data deficient (DD) ; Date assessed: 03 March 2017

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans






Human uses

FAO - Publication: search | FishSource |

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Internet sources

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Go, Search | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates based on models

Preferred temperature (Ref. 123201): 27 - 28.1, mean 27.2 °C (based on 12 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5078   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01862 (0.00830 - 0.04177), b=3.01 (2.81 - 3.21), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic level (Ref. 69278):  3.7   ±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 (10 of 100).