I got a Betta a month ago. Since I got him, he has always been hungry, which I always took to be a good sign, since I just make sure not to give him too much, twice a day. The second the food hits the water, he attacks it. A couple days this week, I have come home from work at about 8, turned on the lights in the house, and found him "sleeping" in the top corner, something which I did not notice before. I attempt to feed him, and he doesn't eat.
This morning I changed his water and cleaned his rocks of any rotting food, so his place is 100% clean. I gave him water that had been sitting for two days in clean containers. Tonight I get home and there he is in the corner, so I gently woke him up and turned all my lights on. He swims around a bit, but somewhat lazily, and still did not eat. Then he kept on gobbling up air every 5 seconds for a bit, which had never happened before.
One last thing, when I wake up every morning, he is active and healthy appearing and eats like normal. I'm worried something might be wrong with him though, because the temperature is usually about 79-82/3 degrees at night, and dips down to the mid 70's by morning. Usually it's 76 at say, 10 AM, and 80 at 10 PM.
My question is:
What might be wrong with him in this scenario?
Thanks for taking the time to read, any advice is appreciated. I think I'm going to get a PH and ammonia kit tomorrow. I want to get a small plant for his home soon too.
If this is nothing I'd be happy to delete the thread.