Mixing Goldfish with Tropical Fish
I have a 10Gal tank that I've had set up for about 8 months now, and as of now, there's only 2 tetras and a danio in there. There's also a crayfish that hides all day.
I remember reading that Goldfish shouldn't eat tropical fish food because of the effects on its stomach or something, plus they like slightly cooler temperatures.
I know plenty of people that mix tropical and goldfish, but I'm just wondering if there are any special instructions for doing this properly. I want to add a goldfish, but not if it will cause any problems.