The fish live on the plankton.

　　這種魚以浮游生物為主食。

　　Fish are abundant in the lake.

　　湖里魚很多。

　　Fish are plentiful in the lake.

　　這個湖里魚很多。

　　The fish I caught was yay big.

　　我釣的魚有這么大呢。

　　Where did you catch the fish?

　　你在哪兒捕到了這條魚？