So I finally just dropped my betta of 1.5 years into his new, 50 gallon home complete with light, heater, filter and several wonderful decorations which offer several hiding spaces. He has only one other fish right now with him which he does not mind at all (most likely due to all the space). But, for some reason, and I may seem crazy, he doesn't seem completely happy. Am I missing something? Water temp and everything checks out, so why isn't he the happiest fish ever right now? All he seems to do is sit on the bottom in one spot for several hours, and then he'll move a few inches, and settle for hours, i've never actually seen a betta in a space like this, could it just be the way they are?