Gymnogobius urotaenia (Hilgendorf, 1879)
Juzukakehaze,  Ukigori,  Uk-igori,  ウキゴリ,  ジュズカケハゼ
Gymnogobius urotaenia
photo by Kim, I.-S.

Family:  Gobiidae (Gobies), subfamily: Gobionellinae
Max. size:  14 cm TL (male/unsexed)
Environment:  demersal; freshwater; brackish; marine, amphidromous
Distribution:  Asia: Korean Peninsula, Japan and Kuril Islands (Ref. 37812).
Biology:  In the middle and lower reach of rivers, often in pools; there are cases in which the species spends its whole life in lakes and ponds. Euryhaline, but usually in freshwater (Ref. 37812); preferring slow-moving waters of rivers and lakes (Ref. 81467). Caught for food.
IUCN Red List Status: Not Evaluated (N.E.) Ref. (124695)
Threat to humans:  harmless
Country info:  Type locality, ZMB 10644 (syntypes 8:2.43-3.14 cm SL) (Ref. 81467). Ranges from Hokkaido to Kyushu (except Shikoku) (Ref. 559) with materials examined from northern and central Honshu and southern Hokkaido (Ref. 81467). Also reported from Kawahara-oike Lake, Nagasaki (Ref. 32231), Lake Biwa (Ref. 78994), and in the Himi region from a habitat study conducted in Toyama Bay (Ref. 58909). Also Ref. 37812 (also as Gymnogobius laevis).

Entered by: Froese, Rainer - 04.12.95
Modified by: Reyes, Rodolfo B. - 22.07.21
Checked by: Froese, Rainer - 28.04.01

Source and more info: For personal, classroom, and other internal use only. Not for publication.

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