all's fish that comes to the net

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

(谚)抓到网里便是鱼；来者不拒；不择手段

a big fish

an important or influential person

大人物，大腕儿

he became a big fish in the world of politics.

他成了政界的一个大腕儿。

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

小塘里的大鱼；矮子堆里的高个

drink like a fish

drink excessive amounts of alcohol

过量饮酒；牛饮

a fish out of water

a person in a completely unsuitable environment or situation

出水之鱼；逆境中人

have other (或 bigger) fish to fry

have other (or more important) matters to attend to

另有要事；另有他图

like shooting fish in a barrel

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

瓮中捉鳖，易如反掌；举手之劳

picking cultivated berries is like shooting fish in a barrel.

采摘种植的浆果易如反掌。

neither fish nor fowl (nor good red herring)

of indefinite character and difficult to identify or classify

非驴非马，不伦不类

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

海里好鱼多的是；天涯何处无芳草

fish out

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

捕尽：用捕或钓的方式把（如湖）鱼捕尽

fish in troubled waters

To try to take advantage of a confused situation.

混水摸鱼：在一片混乱中攫取好处

fish or cut bait【非正式用语】

To proceed with an activity or abandon it altogether.

在两者中作出选择：要么继续干下去，要么全部放弃

like a fish out of water

Completely unfamiliar with one's surroundings or activity.

如鱼离水的，感到生疏：对自己所处的环境或所干的事完全不熟悉的

neither fish nor fowl

Having no specific characteristics; indefinite.

非驴非马的，不伦不类的：没有明显的特征的；不确定的