hello my betta is just lying at the top of my tank he's not on his side so i dont think it is his bladder and every now and then he'll move around a bit but since last night he's just stuck up top . i dont know if he's resting as he has been very active since i got him on tuesday im new to this and just need a bit of addvise from people in the know i have a 5 gallon heated tank 79'fh