all is fish that comes to his net

All is fish that comes to his net (take advantage of all the opportunities that come your way) — Доброму вору все впору; Ему всяко(е) лыко в строку; ничем не побрезгует

Literal Origins: A fisherman can usually use every kind of fish that he catches in his nets.

Common Usage: This proverb is virtually unheard of today.

см
[all is grist that comes to the mill]
[всякое лыко в строку]