Largesnout Goby

Aontheca Infestation. Parasitic infestations (protozoa, worms, etc.)

Amphidromous. Refers to fishes that regularly migrate between freshwater and the sea (in both directions), but not for the purpose of breeding, as in anadromous and catadromous species. Sub-division of diadromous. Migrations should be cyclical and predictable and cover more than 100 km.Characteristic elements in amphidromy are: reproduction in fresh water, passage to sea by newly hatched larvae, a period of feeding and growing at sea usually a few months long, return to fresh water of well-grown juveniles, a further period of feeding and growing in fresh water, followed by reproduction there (Ref. 82692).

Dorsal spines (total): 7; Dorsal soft rays (total): 10; Analspines: 1; Analsoft rays: 10

Inhabits clear streams, often in rainforest with mud, sand or gravel bottoms (Ref. 2847). Usually occurs within 50 km of the sea (Ref. 2847).

Adults inhabit clear streams, often in rainforest with mud, sand or gravel bottoms (Ref. 2847). Usually occur within 50 km of the sea (Ref. 2847).

fisheries: minor commercial; price category: very high; price reliability: very questionable: based on ex-vessel price for species in this family

分布於亞洲與大洋洲海域：包括印度、斯里蘭卡、琉球群島、中國、臺灣、越南、泰國、菲律賓、印尼、巴布亞新幾內亞與索羅門群島等。臺灣分布於各地未受嚴重汙染的溪河下游區及河口區。

小型魚類，不具漁業價值。

第1背鰭：Ⅵ；第2背鰭：Ⅰ/10；臀鰭：Ⅰ/ 10；胸鰭：16。縱列鱗 53~57；橫列鱗15~18；背鰭前鱗18~20。體延長，前部呈亞圓形，後部側扁，尾柄較高。吻背平直。眼高，上側位。唇部肥厚；上唇明顯前突，前端厚實。吻部與口裂明顯地呈約45度的三角形。臉頰具有垂直的感覺乳突線。體被有小型的櫛鱗，後部的鱗片略大。項背部的鱗片較小。第一背鰭約呈三角形；胸鰭寬圓，長度大於眼後的頭長。體呈淡棕色，腹面灰黃色；頭部及體側上半部散布許多褐色或黑色的不規則細斑塊；體側的中央則具有一列不規則的黑斑，延伸到尾鰭的基部。胸鰭基部的上方有一斑塊；背鰭、尾鰭皆具有6~9列的黑褐色點紋；腹鰭、臀鰭呈灰白色。(林上智、林沛立編寫 2012/10)

主要棲息在河口區半淡鹹水至中下游的淡水域中。底棲性魚種，多半停棲在水潭的底部，較少溯游於瀨區。以小型魚類、底棲無脊椎動物為食物來源。

Awaous melanocephalus, the largesnout goby, is a species of goby that is native to fresh water rivers and streams of India, Sri Lanka, Ryukyu Islands, China, Taiwan, Vietnam, Thailand, Philippines, Indonesia, Papua New Guinea and Solomon Islands. Some suggestions has been recorded from Fiji islands and Mauritius, but not confirmed yet.

Adults inhabit in freshwater streams with clear waters, and some muddy bottoms. It is about 15 cm (5.9 in) in length.