im thinking about getting a goldfish for my 20 gallon long. i understand they dont need a heater, that you can keep one in a 20 gallon, but dont know much else. can you keep anything else with them? like mollies or minnows? what so great about them? i know alot of people keep them, but whats so great about them? do they have personality? are they fun to watch? also are there different kinds of fancy goldfish?
thanks in advance
thanks in advance