yellowfin tuna       
noun [ C or U ] uk/ˌjel.əʊ.fɪn ˈtʃuː.nə/ us/ˌjel.oʊ.fɪn ˈtuː.nə/  yellowfin tuna or yellowfin tunas
 黄鳍金枪鱼
a large type of tuna (= a fish that lives in warm seas) that has some yellow fins (= thin vertical parts sticking out of it body that help balance and movement), or the flesh of this fish eaten as food
  He sent a photograph of himself holding a yellowfin tuna. 他发了一张自己抱着条黄鳍金枪鱼的照片。 
 The brunch menu includes seared yellowfin tuna. 早午餐菜单包括烤黄鳍金枪鱼。 
 Compare: skipjack tunabluefin tuna
 - More examples
 - The technology can trace yellowfin tuna from the time it's caught to the moment it hits store shelves.
 - At the aquarium the great white shark is in a display with bluefin and yellowfin tuna, black sea turtles and other sharks.
 - We had fresh yellowfin tuna salad with haricot beans.
 - Supermarkets usually sell sushi made from yellowfin tuna.
 - A day fishing at sea usually yields marlin and yellowfin tuna.
 - The population of the yellowfin tuna has begun to shrink due to overfishing.