The phrase "fish out of water" is an idiomatic expression that means someone who is in a strange or unfamiliar environment, situation or circumstance. Full definition
Exactly, any world - class winger / attacker should be able to slot in as a temporary striker without looking like fish out of water. (justarsenal.com)
Naturally, they get in, and find themselves functioning as tried - and - true fish out of water in this familiar formula. (christylemire.com)
Instead it's just a really funny movie with guys in fish out of water situations. (fatmovieguy.com)