I get my fish from petco & petsmart. which i hate but have no choice. Here lately ive been bringing home a fish at a time, and they only last 2 days b4 they die. i know its not anything im doin wrong, i think they are dieing from starvation cuz i never see it eat any of my pellets or flakes. i have only 3 fish and a 20 gal so its not overcrowded. So my last theory is that my pH is around 7.8 and the stores are different. So could the diffrent pH's make him like stress out and dies or something?? I bring him home float him in my tank then tank it out with my net (i dont put any of their water in mine) and it'll be okay then for 2 days then it dies. i swear from starvation!! i cant go to the store and talk to them cuz they never know what they are talking about!! So plz help me if you have any idea. thanks for looking!! ohh in case you need to know i have a bala shark, angel, and sucker.. i had an albino rainbow shark, and it died this morning now off to petsmart. They have crummy fish!!