In that small of a tank, you won't be able to fit adult Goldfish... Fancy varieties will reach 15-20 cm and Common Goldfish will reach 40+ cm... If you want coldwater fish, go for some Minnows and Guppies (keep th temp about 70*). Tropical fish really aren't that difficult... They are basically coldwater fish with a heater... You don't have to do anything extra, and there are MANY more varieties... If you go tropical, Guppies, Bettas, Dwarf Gouramis, Cories, Kuhli Loaches, Tetras, and some of the smaller species of Barbs would do just fine in your tank. |