I had originally wanted a 10 gallon tank so that i could potentially add another fish or two later but the guy at petsmart said bettas "freak out" in large spaces and that they need small tanks with lots of hiding places. The betta "tanks" he showed me were basically expensive water glasses/jars so I opted for the 2.65gal "goldfish" set up. (this is the tank btw http://www.petsmart.com/global/product_detail.jsp?PRODUCT%3C%3Eprd_id=845524441813899&FOLDER%3C%3Efolder_id=2534374302030056&ASSORTMENT%3C%3East_id=2534374302023693&bmUID=1177354089240&itemNo=42&Nao=24&In=Fish&N=2030056&Ne=2 ) So I have a new betta. I bought him yesterday from Petsmart (he was in a tiny little cup!) and i bought a 2.65 gallon tank with a filter. I also bought 2 silk plants and a cave like thing for him to hide in. I bought him the same day as my tank because the fish guy at Petsmart said bettas were the only fish in the store that could be put in the tank without having to have it running for a week before hand. I set up my tank, added water conditioner and floated him in it for about 2 hours and then put him in the actual tank. He seemed to really liek the space, at first he was swimming from place to place exploring everything and checking ou the filter. Now he is kind of just hiding behind the plants or the rock. Did I do something horribly wrong? Is this normal for bettas?