Biological facts about adding a janitor fish in an aquarium with goldfish

tje janitor fish will eat the gold fish

so i recommend to never ever put a janitor fish inside a tank when there are goldfish or any other fish inside it

EXPLANATION: It is advised that we cannot combine a janitor fish and goldfish in a same aquarium. This is because, Janitor fishes are usually a tropical type. And one should not mix cold water fish like Goldfish with tropical water fish (Janitor).

They might both die but they won't kill each other.

They will fight