all's fish that comes to the net

(proverb)you can or should take advantage of anything that comes your way

(諺)抓到網里便是魚；來者不拒；不擇手段

a big fish

an important or influential person

大人物，大腕兒

he became a big fish in the world of politics.

他成了政界的一個大腕兒。

a big fish in a small (或 little) pond

a person seen as important and influential only within the limited scope of a small organization or group

小塘里的大魚；矮子堆里的高個

drink like a fish

drink excessive amounts of alcohol

過量飲酒；牛飲

a fish out of water

a person in a completely unsuitable environment or situation

出水之魚；逆境中人

have other (或 bigger) fish to fry

have other (or more important) matters to attend to

另有要事；另有他圖

like shooting fish in a barrel

used to convey the extreme ease with which something can or has been accomplished

甕中捉鱉，易如反掌；舉手之勞

picking cultivated berries is like shooting fish in a barrel.

采摘種植的漿果易如反掌。

neither fish nor fowl (nor good red herring)

of indefinite character and difficult to identify or classify

非驢非馬，不倫不類

there are plenty more fish in the sea

used to console someone whose romantic relationship has ended by pointing out that there are many other people with whom they may have a successful relationship in the future

海里好魚多的是；天涯何處無芳草

fish out

To deplete (a lake, for example) of fish by fishing.

捕盡：用捕或釣的方式把（如湖）魚捕盡

fish in troubled waters

To try to take advantage of a confused situation.

混水摸魚：在一片混亂中攫取好處

fish or cut bait【非正式用語】

To proceed with an activity or abandon it altogether.

在兩者中作出選擇：要么繼續干下去，要么全部放棄

like a fish out of water

Completely unfamiliar with one's surroundings or activity.

如魚離水的，感到生疏：對自己所處的環境或所干的事完全不熟悉的

neither fish nor fowl

Having no specific characteristics; indefinite.

非驢非馬的，不倫不類的：沒有明顯的特征的；不確定的