Though environmental factors affecting the upstream migration of eels in Chang Xing island,Heng Sha island and Xiao Yang mountain,studies were conducted from January to May in 2007.
长江口附近潮汐为半月潮,每月有两次涨落潮,鳗苗溯河量与潮汐周期呈现一定的节律性,每月有两次鳗苗峰值。
Convention for the Conservation of Anadromous Stocks in the North Pacific Ocean
北太平洋溯河鱼类养护公约
North Pacific Anadromous Fish Commission
北太平洋溯河鱼类委员会
She went up the Nile as far as the first crocodile .
她溯尼罗河之源而上，直至遇上第一条鳄鱼。
She went up the Nile as far as the first crocodile.
她溯尼罗河之源而上，直到遇上第一条鳄鱼。
Counting method of upstream juvenile Ayu(Plecoglossus altivelis) by acoustic camera
基于声学摄像仪的溯河洄游幼香鱼计数
On the problems of spawing ground, spaw-ing period of Japanese eel and the time of upsream migration of glass eel are also discussed.
最后就鳗鱼的产卵场、产卵期及白仔鳗溯河期问题进行了讨论。
A young Atlantic salmon on its first return from the sea to fresh or brackish waters.
溯河产卵时期的鲑鱼第一次从海中返回淡水或微咸的水中的幼小的大西洋鲑鱼
A run of salmon, eg on their way upstream
游动的鲑鱼群（如在溯江洄游途中）
The river is home to a fish and a crocodile.
河是鱼和鳄鱼的家。
Any of various primitive elongated freshwater or anadromous fishes of the family Petromyzontidae, characteristically having a jawless sucking mouth with rasping teeth.
七鳃鳗，八目鳗一种七鳃鳗科的原始细长淡水或溯河产卵鱼，特点是长有无颌的吮吸嘴，嘴内有锉牙
Distribution of eggs and larvae of osteichthyes in Hebei coast
河北沿岸硬骨鱼类鱼卵和仔雅鱼分布
We traced the river to its source.
我们溯河而上直到它的源头。
venture on a trip up the Amazon
敢于溯亚马逊河而上旅行.
Ecology and resource on the upstream migration elvers of Japanese eel ( Anguilla Japonica ) in coastal waters of the Yellow Sea
辽宁黄海沿岸鳗苗的溯河生态与资源
boxfishes; filefishes; globefishes; ocean sunfishes; triggerfishes; puffers.
热带产的一种硬鳞鱼；豚鱼；河豚；海翻车鱼；热带鱼的一种；河豚科鱼类。
Traceability system for tilapia breeding quality safety information based on Web
基于Web的罗非鱼养殖质量安全信息可追溯系统
The Use of Sedimentary Fish-Scale for Reconstruction of the Last 150 Years Fish Population Fluctuations in Yellow Sea;
应用鱼鳞沉积信息追溯近150年黄海重要鱼种的种群动态
This river abounds with fish.
这条河里有许多鱼。