Polymixia melanostoma, Black-mouth beardfish

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Polymixia melanostoma Fan, Su, Lin, Chang & Lin, 2024

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

Teleostei (teleosts) > Polymixiiformes (Beardfishes) > Polymixiidae (Beardfishes)
Etymology: Polymixia: Greek, poly = a lot of + Greek, myxos = mucus (Ref. 45335); melanostoma: Name from Greek words 'melano' and 'stoma', meaning 'black mouth', referring to its unique black oral cavity.

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

Marine; benthopelagic; depth range 765 - 778 m (Ref. 132970). Tropical

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

Western Pacific: Taiwan and New Caledonia.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 15.3 cm SL male/unsexed; (Ref. 132970)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 4 - 5; Dorsal soft rays (total): 35 - 37; Anal spines: 4; Anal soft rays: 14 - 16; Vertebrae: 29. This species is distinguished from its congeners by the following set of characters: D IV-V,35-37; gill rakers on the outer face of first gill arch 3+1+6=10; scales row between dorsal-fin origin and lateral line vertically 6-8 and posteriorly 12-14; pyloric caeca 40; snout is rounded, with the surface rough and gelatinous, its tip evidently protrude anterior margin of premaxilla; ctenii on body scales arranged in wedge shape, forming three rows; fourth anal-fin spine long, 1.0-1.2 in eye diameter; dorsal-fin is long, 49.6-53.0% SL; oral-branchial cavity, not including the underside of tongue, black (Ref. 132970).
Cross section: compressed.

Biology     Glossary (e.g. epibenthic)

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

Main reference Upload your references | References | Coordinator | Collaborators

Fan, Y.-C., Y. Su, C.-H. Lin, C.-W. Chang and H.-C. Lin, 2024. Polymixia melanostoma, a new beardfish from the western Pacific (Teleostei, Polymixiiformes, Polymixiidae). ZooKeys 1220:105-121. (Ref. 132970)

IUCN Red List Status (Ref. 130435: Version 2025-1)

Not Evaluated 

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

FAO - Publication: search | FishSource |

More information

Trophic ecology
Food items (preys)
Diet composition
Food consumption
Food rations
Predators
Ecology
Ecology
Home ranges
Population dynamics
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Recruitment
Abundance
Life cycle
Reproduction
Maturity
Maturity/Gills rel.
Fecundity
Spawning
Spawning aggregations
Eggs
Egg development
Larvae
Larval dynamics
Distribution
Countries
FAO areas
Ecosystems
Occurrences
Introductions
BRUVS - Videos
Anatomy
Gill area
Brain
Otolith
Physiology
Body composition
Nutrients
Oxygen consumption
Swimming type
Swimming speed
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Genetics
Genome
Genetics
Heterozygosity
Heritability
Human related
Aquaculture systems
Aquaculture profiles
Strains
Ciguatera cases
Stamps, coins, misc.
Outreach
Collaborators
Taxonomy
Common names
Synonyms
Morphology
Morphometrics
Pictures
References
References

Tools

E-book | Field guide | Length-frequency wizard | Life-history tool | Point map | Catch-MSY |

Special reports

Check for Aquarium maintenance | Check for Species Fact Sheets | Check for Aquaculture Fact Sheets

Download XML

Summary page | Point data | Common names | Photos

Internet sources

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

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5007   [Uniqueness, from 0.5 = low to 2.0 = high].
Trophic level (Ref. 69278):  3.8   ±0.4 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.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100). 🛈