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Bassozetus galatheae  Nielsen & Merrett, 2000

Galathea assfish
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Bassozetus galatheae   AquaMaps   Data sources: GBIF OBIS
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Bassozetus galatheae
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Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Ophidiiformes (Cusk eels) > Ophidiidae (Cusk-eels) > Neobythitinae
Etymology: Bassozetus: Latin, bassus = thick, fat + Greek, ketos = marine mosnter, whale (Ref. 45335);  galatheae: Named for the Danish research vessel GALATHEA which caught the first specimens during its global circumnavigation in 1950-52..   More on author: Nielsen.

Environment / Climate / Range Ecology

Marine; bathydemersal; depth range 1680 - 1800 m (Ref. 84269).   Deep-water, preferred ?

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

Indo-Pacific: from off Kenya to Fiji.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 55.5 cm SL male/unsexed; (Ref. 84269)

Short description Morphology | Morphometrics

This species is distinguished by the following characters: body elongate, tapering caudally, scales on head and body rather small with 25-35 oblique scale rows, snout rather pointed, mouth terminal, a single basibranchial tooth patch with a slight constriction centrally and a v-shaped vomer, sagittal otolith large with a small sulcus and no ostial channel, dorsal fin-rays 132-142, anal fin-rays 108-114, pectoral fin-rays 26-29, ventral fin-rays not reaching anus, total number of vertebrae 71-76, long gill rakers on anterior arch 14-17 (Ref. 84269).

Biology     Glossary (e.g. epibenthic)

A benthic species found on the continental slope (Ref. 75154). Reproductive strategy possibly similar to other members of this family featuring oviparity, with oval pelagic eggs floating in a gelatinous mass (Ref. 205). Of the 22 examined specimens 16 are males, including a 55.5 crn SL specimen with spent testes. One of the six females measuring 23.2 cm SL had fully ripe ovaries with eggs of about 0.5 mm in diameter. These were caught on or near the bottom mostly at slope depths but also extending into the abyss. Identifiable contents from the digestive tract found in six specimens include scales and vertebrae from fish, dorsal felt from polychaetes and remains of crustaceans (Ref. 84269).

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

Main reference Upload your references | References | Coordinator | Collaborators

Nielsen, J.G. and N.R. Merrett, 2000. Revision of the cosmopolitan deep-sea genus Bassozetus (Pisces: Ophidiidae) with two new species. Galathea Report 18:7-56. (Ref. 84269)

IUCN Red List Status (Ref. 115185)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

  Harmless




Human uses

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Internet sources

BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | ECOTOX | Faunafri | Fishes of Iran | Fishtrace | GenBank(genome, nucleotide) | GloBI | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Scirus | SeaLifeBase | Tree of Life | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5001   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm Total Length, based on all LWR estimates for this body shape (Ref. 93245).
Trophic Level (Ref. 69278):  3.7   ±0.6 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278):  Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153):  Moderate to high vulnerability (51 of 100) .