I have a 3 year old male betta and something is seriously wrong. He is just lying on his side on the bottom of the aquarium, hasn't eaten in 10 days now. I have even dropped a 7 day feeder at the bottom for him in hopes that he would eat that and he hasn't. He has not spots on the outside of his body but towards the back of his body there is a lump that won't allow it to lie flat. I can walk up to the tank and he will respond to me by breathing but no other movement. I have talked to pet stores and they tell me it is just his time. This has been going on for several days and it is very very sad to watch. I will not give up on him in hopes that he just recovers. Any input would be greatly appreciated.