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Diancistrus altidorsalis  Schwarzhans, Møller & Nielsen, 2005

Humpbacked coralbrotula
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Native range | All suitable habitat | Point map | Year 2100
This map was computer-generated and has not yet been reviewed.
Diancistrus altidorsalis   AquaMaps   Data sources: GBIF OBIS
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Image of Diancistrus altidorsalis (Humpbacked coralbrotula)
Diancistrus altidorsalis
Male picture by W. Schwarzhans et al.

Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Ophidiiformes (Cusk eels) > Bythitidae (Viviparous brotulas) > Brosmophycinae
Etymology: Diancistrus: Greek, di = two + Greek, agkistron = hook (Ref. 45335);  altidorsalis: Name from Latin 'altus' meaning high and 'dorsalis' meaning neck, referring to its high-necked profile..   More on author: Schwarzhans, Nielsen.

Environment / Climate / Range Ecology

Marine; reef-associated; depth range 15 - 20 m (Ref. 57884).   Tropical, preferred ?

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

Western Pacific: Indonesia, New Guinea, Sabah to the Solomons, including Sta. Cruz Islands.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 10.2 cm SL male/unsexed; (Ref. 57884)

Short description Morphology | Morphometrics

Dorsal soft rays (total): 76-85; Anal soft rays: 59 - 68; Vertebrae: 43 - 45. Diagnosis: Vertebrae 11+32-34=43-45, dorsal fin rays 76-85, anal fin rays 59-68; eyes large (at least 2.5% SL); outer pseudoclasper large, broad, ear-lobe shaped; inner pseudoclasper a fleshy appendix at the anterior-inner rim of the outer pseudoclasper, without supporter; large scale patch on operculum above opercular spine (6–9 scales) and 1 to 3 isolated scales below opercular spine; head profile strongly ‘high-necked / hump-backed’; color yellow in live specimens (Ref. 57884).

Biology     Glossary (e.g. epibenthic)

Large dominating individuals were observed to make attacks toward smaller fish, which were hiding below rocks or any other shelter provided. One male was observed to flip backward the cover of the copulatory organ so that the organ can be exposed while swimming (Ref. 57884). Solitary inhabitant of coral reef crevices to at least 20m depth, cryptic (Ref 90102).

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

Main reference Upload your references | References | Coordinator | Collaborators

Schwarzhans, W., P.R. Møller and J.G. Nielsen, 2005. Review of the Dinematichthyini (Teleostei, Bythitidae) of the Indo-West-Pacific. Part I. Diancistrus and two new genera with 26 new species. The Beagle, Records of the Museum and Art Galleries of the Northern Territory 21:73-163. (Ref. 57884)

IUCN Red List Status (Ref. 115185)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

  Harmless




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