You can sponsor this page

Acanthonus armatus Günther, 1878

Bony-eared assfish
Add your observation in Fish Watcher
Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Acanthonus armatus   AquaMaps   Data sources: GBIF OBIS
Upload your photos and videos
 Pictures | Google image
Image of Acanthonus armatus (Bony-eared assfish)
Acanthonus armatus
Picture by Günther, A.C.L.G.

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

Teleostei (teleosts) > Ophidiiformes (Cusk eels) > Ophidiidae (Cusk-eels) > Neobythitinae
Etymology: Acanthonus: Greek, akantha = thorn + Greek, onos = hake.
More on author: Günther.

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

Marine; bathypelagic; depth range 1171 - 4415 m (Ref. 75877). Deep-water; 36°N - 23°S, 81°W - 154°E

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

In deep waters off tropical and subtropical areas of all oceans. Especially abundant in the tropical western Atlantic (Ref. 3686). Reported from Carlsberg Ridge (6°22'N 60°12'E) and New Guinea (Ref. 33390). Known from Gulf of Mexico, Caribbean Sea, southern India, Philippines, Gulf of Panama and tropical west Africa (Ref. 44076).

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 37.5 cm SL male/unsexed; (Ref. 34024)

Short description Identification keys | Morphology | Morphometrics

Head large and body tapering. Snout with prominent, bifid spine. Opercular spine long and slender extending well beyond rear margin of head. Well developed spines at lower angle of preopercle. Eye small. Anterior gill arch with 16-22 developed rakers. Precaudal vertebrae 9-10.

Biology     Glossary (e.g. epibenthic)

Benthopelagic at bathyal and abyssal depths (Ref. 56809). Common species (Ref. 34024). Oviparous, with oval pelagic eggs floating in a gelatinous mass (Ref. 205). Noted as having the smallest relative brain size among teleosts, and remarkably large semicircular canals (Ref. 7463).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

Nielsen, J.G., 1990. Ophidiidae. p. 564-573. In J.C. Quero, J.C. Hureau, C. Karrer, A. Post and L. Saldanha (eds.) Check-list of the fishes of the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris; and UNESCO, Paris. Vol. 2. (Ref. 3686)

IUCN Red List Status (Ref. 130435)

  Least Concern (LC) ; Date assessed: 08 July 2014

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Fisheries: of no interest
FAO - Publication: search | FishSource |

More information

Trophic ecology
Food items
Diet compositions
Food consumptions
Food rations
Predators
Ecology
Ecology
Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversions
Recruitments
Abundances
Life cycle
Reproduction
Maturities
Fecundities
Spawnings
Spawning aggregations
Egg(s)
Egg developments
Larvae
Larval dynamics
Distribution
Countries
FAO areas
Ecosystems
Occurrences
Introductions
BRUVS - Videos
Anatomy
Gill areas
Brains
Otoliths
Physiology
Body compositions
Nutrients
Oxygen consumptions
Swimming type
Swimming speeds
Visual pigment(s)
Fish sounds
Diseases / Parasites
Toxicities (LC50s)
Genetics
Genetics
Electrophoreses
Heritabilities
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 | Classification Tree | 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 | 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 | National databases | 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): 1.8 - 4.1, mean 2.7 °C (based on 1440 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 1.0000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00110 (0.00041 - 0.00296), b=3.08 (2.85 - 3.31), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic level (Ref. 69278):  3.6   ±0.6 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):  Moderate vulnerability (36 of 100).