I just moved into college and my beta that I had for a while died because he wouldn't eat. I got a new beta 2 days ago, and he hasn't ate since I got him. We can't have heaters in the dorms, so I don't know exactly how warm the water is. I fed him Hikari betta bio-gold baby pellets and he doesnt eat them. sometimes he will, but then spits them back out. I am going to change half of the water tomorrow, but I don't know what else to do. I dont want him to die just like my other one. How can I get him to eat?