78K views · 956 reactions | This Fish Combo That Always Fails Goldfish like cooler water and don’t need a heater. Tropical fish need warm water to live comfortably. These different needs mean they can’t live in the same tank. If you want both, set up separate tanks so each group stays healthy. Follow for more helpful tips on how to properly care for your aquarium fish. #GoldfishCare #TropicalFishCare #AquariumTips | DrTims Aquatics | Facebook