Originally Posted by Alex09
Well goldfish and bettas arent generally compatible. Besides, bettas are tropical fish and need temperature of 98-80*F to thrive whereas goldfish are coldwater fish and need cooler water. You could rehome your goldfish, find a heater (if you dont have one) and put your betta in a 55 gal and buy other tropical fish such as cory cats, tetras, and rasboras as tankmates.
Um, 98 degrees would be way too hot for bettas. I'm assuming you meant to type 78?
But anyway, I think a betta in a community tank would be a good idea!