New Betta Fish Behavior
So I have now had my twin tail half-moon male better for two days now. I have him in a 3.5 gallon tank that has a filter, heater and thermometer (water temp is always at 79° or 80°F). There is a marimo moss ball, two fake plants for him to hide in as well as a pineapple. I have tried to feed him Omega One freeze dried bloodworms, Omega One buffet pellets as well as the flakes and he will not eat any of it. He has tried to eat the pellets but either spits them out or can't get it in his mouth before it falls to the bottom. He completely ignores bloodworms which surprised me.
I am concerned because first of all he has been swimming in a very odd fashion in my opinion. He swims up and down very fast every once in a while and will also swim against the glass. Today, whenever I have approached the tank he will either come out to see me at the front of the tank for maybe 15 seconds or dart into his green leaf plant which he hides in all the time and rests in. He hides behind the filter and does everything to stay out of my sight. He also seems to flare a lot especially when he hides between the glass and pineapple.
I am attaching pictures of him in a collage in chronological order. I feel like he some sort of illness because of how he is acting.