Golden Carp Gudgeon

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): 8; Analspines: 1; Analsoft rays: 9

Favours shallow vegetated margins of freshwater streams entering estuaries. Feeds on mosquito and other insect larvae. Threatened by coastal development and destruction of habitat through farming, industrial and urban activities (Ref. 7248).

Favors shallow vegetated margins of freshwater streams entering estuaries. Feeds on mosquito and other insect larvae. Threatened by coastal development and destruction of habitat through farming, industrial and urban activities (Ref. 7248).

分布於印度-太平洋區，包括帛琉群島、琉球群島、印度尼西亞、菲律賓、新幾內亞、瓦努阿圖、新喀裡多尼亞、斐濟和薩摩亞、留尼汪島、科摩羅、馬達加斯加、臺灣、日本等地各聯通海洋的河流及溪流。臺灣分布於北部、南部及東部等地。

小型魚類，不具食用經濟性。

第1背鰭：Ⅵ；第2背鰭：Ⅰ/ 8。臀鰭：Ⅰ/ 9；胸鰭：14；腹鰭：Ⅰ/ 5；尾鰭：2+15+3。縱列鱗 28～29；橫列鱗 8～9；背鰭前鱗11～14 。體長為體高的3.6倍；為頭長的3.5倍。頭長為吻長的4倍；為眼徑的3.4倍；眼間距的2.9倍。尾柄長為尾柄高的1.8倍。體延長，形狀稍微側扁。背緣、腹緣微微隆起，尾柄較長，小於體高。頭小，形狀較尖，平扁；頭後稍微隆起。頭部具有3個感覺管孔。臉頰不突，有1條縱形感覺乳突線，自上唇後緣向後形成弧形，斜向眼睛的後上方。吻尖且突，較長，吻長稍微小於眼徑。眼大，上位，突出。兩眼間隔寬平，寬度大於眼徑，約為眼徑的1.2倍。鼻孔每側兩個，分離，相距較遠：前鼻孔圓形，具有短管，接近上唇；後鼻孔小，邊緣隆起，緊位於眼前緣。口小，前上位，口裂向後延伸不超過眼睛前緣。上、下頜齒形狀細尖，多行，形成絨毛狀，不具犬齒；鋤骨無齒。唇厚。舌游離。鰓孔寬大，向前向下延伸至前鰓蓋骨後緣稍前的下方。鰓蓋上方具有2個感覺管孔，前鰓蓋骨後緣具有4個感覺管孔。兩鰓蓋膜末端在腹面相當接近，但不癒合。魚體身上有大型的弱櫛鱗；頸部、鰓蓋部位具有中大型的圓鱗，頸部的圓鱗向前延伸至眼的後方；臉頰上有小圓鱗；胸鰭基部和腹部也為小型圓鱗。無側線。背鰭2個：第1背鰭起於胸鰭基部後上方，第2棘最長，後端不會延伸到第2背鰭起點；第2背鰭較長，平放時不延伸至尾鰭基部。臀鰭起點與第2背鰭相對。胸鰭寬圓，下側位，胸鰭後緣達肛門的上方。腹鰭長度與胸鰭長約相等，內側鰭條長於外側的鰭條，左、右腹鰭靠近，但不相連、癒合。尾鰭長圓形。頭部及體側為淡黃褐色；自吻部經眼、鰓蓋，沿魚體側至尾柄基部有1條較寬的藍黑色縱帶，其末端在尾鰭基部顏色較深，呈黑色斑；鰓孔後方的體側面及胸鰭基部有1個灰黑色條斑。雄魚背鰭黑色，有數個白色圓斑及條斑，邊緣白色。臀鰭以及腹鰭為淺灰色或透明。(林上智、林沛立編寫 2012/10)

暖水性小型底層魚類。通常棲息於水性植物豐富、水質較清澈的溪流下游或河口等半淡鹹水域。喜好溯游在水體的表層，活潑而善群遊活動。為偏肉食性之小魚，一般以攝食小魚、蝦、蟹、水生昆蟲和附著性的動植物等為生。

Hypseleotris cyprinoides, the tropical carp-gudgeon or tropical bitterling-gudgeon, is a species of fish in the family Eleotridae found in fresh, brackish, and marine coastal waters from Africa through southern Asia to the Pacific Islands. This amphidromous species can reach a length of 8 cm (3.1 in). It has been extirpated from the Indian Ocean island of Réunion,