My 20 year old sister owns a betta, has him in a 1/8 gallon vase, cleans his vase about every 2 weeks, and feeds him like 6 pellets once every other day. It annoys me soooo much! I just want to save him from her! When I try to tell her that use needs a WAY bigger TANK for her betta (not a vase either). Then she just comes at me with the thing that just makes me want to explode, "well bettas live in mud puddles in the wild. So my betta is in luxury." and if I try to tell her about her feeding or cleaning, she just says, "hey, I'm the betta expert in this house!" really!? I have 5 bettas, the smallest tank I have being 2.5 gallons! I spend hours on this website and others learning about bettas and ensuring they have the best care possible! And her only source for her betta information is the mostly clueless employees at petco! It all just makes me so angry! Her betta may as well he back in its cup at petco! Haha sorry I really just needed to blow some steam about this!