What kind of fish can go into a backyard pond?
It depends on the size of your pond. If you already have goldfish though, I wouldn’t recommend adding anything big to it. You can try something like lyretail mollies, white cloud mountain minnows, or killifish. Just make sure there are plenty of places for the smaller fish to hide because if a goldfish is able to keep up with them, they’ll become goldfish snacks. Please don’t get koi as they need thousands of gallons of water.