Thread-tail Dartgoby, Ptereleotris hanae (Jordan & Snyder 1901)

Other Names: Blue Goby, Blue Hana Goby, Filament Dartfish, Threadfin Dartfish, Thread-tail Dart-goby

A Thread-tail Dartgoby, Ptereleotris hanae, in Okinawa, Japan. Source: Klaus Stiefel / Flickr: Pacific Klaus. License: CC BY Attribution-Noncommercial-ShareAlike


A pale blue to light bluish-grey dartgoby, with two curved iridescent blue bands on the gill cover, usually 2-6 filaments trailing from the caudal fin, and a diagonally elongate reddish to violet spot on lower pectoral-fin base.

Thread-tail Dartgobies are very wary, and retreat into crevices and burrows when threatened.

Video of Thread-tail Dartgobies in the Enoshima Aquarium in Japan.

Cite this page as:
Dianne J. Bray, Ptereleotris hanae in Fishes of Australia, accessed 20 Jun 2024,

Thread-tail Dartgoby, Ptereleotris hanae (Jordan & Snyder 1901)

More Info


Widespread in the tropical east-Indo-west Pacific from Borneo and East Java to the Solomon Islands, Micronesia, the Line Islands and Samoa, to tropical Australia and Japan.
Inhabits reef slopes, usually in pairs over sandy and rubble bottoms. Thread-tail Dartgobies tend to use burrows already occupied by gobies of the genus Amblyeleotris and their alpheid shrimp 'partners'.


To a total length of 12 cm excluding the filaments trailing from the caudal fin.

Species Citation

Vireosa hanae Jordan & Snyder, 1901, Proc. U.S. Natl Mus. 24(1244): 38, fig. 1. Type locality: Misaki, Sagami Bay, Honshu (as Kuro Shiwo), Japan.


Dianne J. Bray

Thread-tail Dartgoby, Ptereleotris hanae (Jordan & Snyder 1901)


Allen, G.R. 1997. Marine Fishes of Tropical Australia and South-east Asia. Perth : Western Australian Museum 292 pp. 106 pls.

Allen, G.R. & Swainston, R. 1988. The Marine Fishes of North-Western Australia. A field guide for anglers and divers. Perth, WA : Western Australian Museum vi 201 pp., 70 pls.

Allen, G.R. & M.V. Erdmann. 2012. Reef Fishes of the East Indies. Tropical Reef Research, Perth Australia.

Hutchins, B. 2004. Fishes of the Dampier Archipelago, Western Australia. Records of the Western Australian Museum, Supplement 66: 343–398.

Jaafar, Z. & D. Ng. 2012. New record of the Blue-tailed Dartfish,Ptereleotris hanae (Teleostei: Ptereleotridae) in Singapore. Nature in Singapore 5: 369–371.

Jordan, D.S. & Snyder, J.O. 1901. A review of the gobioid fishes of Japan with descriptions of twenty-one new species. Proceedings of the United States National Museum 24(1244): 33-132 figs 1-33.

Kuiter, R.H. 1992. Tropical Reef-Fishes of the Western Pacific, Indonesia and Adjacent Waters. Jakarta : PT Gramedia Pustaka Utama 314 pp. pls.

Kuiter, R.H. 1993. Coastal Fishes of South-eastern Australia. Bathurst : Crawford House Press 437 pp.

Myers, R.F. 1999. Micronesian Reef Fishes. A comprehensive guide to the coral reef fishes of Micronesia. Guam : Coral Graphics vi 330 pp. 192 pls.

Randall, J.E., Allen, G.R. & Steene, R. 1990. Fishes of the Great Barrier Reef and Coral Sea. Bathurst : Crawford House Press 507 pp. figs.

Randall, J.E. & Hoese, D.F. 1985. A revision of the dartfishes, genus Ptereleotris (Perciformes: Gobioidei). Indo-Pacific Fishes 7: 1-36 figs 1-11 pls 1-4.

Quick Facts

CAAB Code:37435017

Depth:3-50 m

Habitat:Reef associated

Max Size:12 cm TL

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CAAB distribution map