"Duck bulgogi is too delicious!"
Translation:오리 불고기는 너무 맛있습니다!
It is strange that they use the animals in the animal lesson as meat. Anyone thought is was strange? Shouldn't they put the meat in the food lesson. Unkess, they decide to teach us a lion eatibg a gazelle or something.
물고기 is generally used for live fish. So you can say 물고기 잡으러 강에 갑니다 "I go to the river to catch fish"
생선 also means fish but it is used for food such as 생선구이
In this case they said 불고기, which also is a Korean dish. It literally means "fire meat" as it is cooked over fire.