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Grammonus thielei  Nielsen & Cohen, 2004

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Grammonus thielei
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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) > Bythitidae (Viviparous brotulas) > Bythitinae
Etymology: Grammonus: Greek, gramma = signal, mark + Greek, onos = hake;  thielei: Named for Werner Thiele, who photographed and caught the holotype..   More on author: Nielsen, Cohen.

Environment / Climate / Range Ecology

Marine; benthopelagic; depth range 2 - 25 m (Ref. 56143).   Tropical; 21°C - 25°C (Ref. 56143), preferred ?

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

Western Pacific: Sulawesi, Indonesia.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 18.0 cm TL male/unsexed; (Ref. 56143); 15.0 cm TL (female)

Short description Morphology | Morphometrics

Dorsal soft rays (total): 66; Anal soft rays: 41. Diagnosis: Fin rays in dorsal 66; anal 41; pectoral 21. Vertebrae 11 + 27 (ural elements counted as 1). Head length 33% SL. One large lateral line pore (equal to posterior supraorbital pore) near angle of opercle. The caudal fin is free of the dorsal and anal fins (Ref. 56143).

Biology     Glossary (e.g. epibenthic)

Observed in limestone caves and sinkholes which are probably connected at depths between 2 and 30 meters; often in lightless chambers without current, few are found at the entrance of caves where they hide beneath rock ledges. No reaction to torchlight was shown and escape distance was only about 2 centimeters; mostly were seen motionless, with only a slight movement of the fins maintaining the fishes' position (Ref. 56143).

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

Main reference Upload your references | References | Coordinator | Collaborators

Nielsen, J.G. and D.M. Cohen, 2004. Grammonus thielei (Ophidiiformes: Bythitidae) - a new bythitid cavefish from off Sulawesi, Indonesia. The Beagle 20:83-86. (Ref. 56143)

IUCN Red List Status (Ref. 115185)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

  Harmless




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