Their backs were battleship gray topped with a saw-toothed line of small yellow dorsal fins.
它们的背部是军舰的灰色，最上方是呈锯齿状的黄色背鳍。
When there is blood in the water, it is only natural that dorsal fins swirl around excitedly.
如果水中有血的话，那么很自然的背鳍就会兴奋地游来游去。
Their body color and appearance were observed and recorded. and 29 items which covered body length, body weight, perimeter, dorsal fins and teeth etc.
对其体色及外部形态进行观察，并测定体长、体重、体围、鳍和齿式等29个项目。
They were documenting the dorsal fins of sharks, as part of an identification program, when a 10-foot-long great white shark suddenly landed on their vessel.
那天在莫斯湾的船上他正在与其他六名船员正在进行对鲨鱼群背部鳍记录的识别项目，一只10英尺长的大白鲨突然间跃上他们的船舷。
Laidre's team began taking measurements in 2005, by capturing 14 narwhals (Monodon monoceros) in nets and attaching the electronic gear to the animals' dorsal fins.
雷珠阿测量队于2005年开始测量，他们用网捕获14头独角鲸，在其背鳍装上电子传感器。
A water lily-carpeted pond edges grayling lake trail, north of Seward, Alaska. One of the lakes along the trail abounds in grayling, surface feeders with long dorsal fins.
阿拉斯加图片。睡莲-地毯池塘边缘格雷林湖小径，在苏厄德以北，阿拉斯加。其中之一的湖沿着小径盛产河鳟，游水觅食的鸭和长背鳍鱼。
A water lily carpeted pond edges Grayling Lake Trail, north of Seward, Alaska. One of the lakes along the trail abounds in grayling, surface feeders with long dorsal fins.
这是阿拉斯加的一个鳟鱼湖沿线的一个莲花池。有的池中有大量的鳟鱼，它们会浮出水面捕食。
Among the hundreds of guppy varieties, the best known feature of the male fish is its gorgeous dorsal and caudal fins.
在成千上百的孔雀鱼品种中，雄鱼最著名的特色就是它们华丽的背鳍和尾鳍。
The Angel Fish has an elongated and flat shape with long dorsal and anal fins extending backwards. It usually feeds on shrimps and worms and can measure up to 12 cm long.
神仙鱼的体型既高又扁，有着向后舒展的长长背鳍和臀鳍，常以虾、蠕虫等为食，体长可达12厘米。
Dorsal fin, tail fin and fat fins slightly yellow, pectoral fin, and ventral fin Tunqi gray.
背鳍、脂鳍和尾鳍稍带浅黄色，胸鳍、腹鳍和臀鳍灰白色。
Dorsal fin, tail fin and fat fins slightly yellow, pectoral fin, and ventral fin Tunqi gray.
背鳍、脂鳍和尾鳍稍带浅黄色，胸鳍、腹鳍和臀鳍灰白色。
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