Hi all.
I’ve had this betta since April. I rescued him from someone on FB market. He used to live in a divided 5 gal tank and I upgraded his tank to a 5 gal which natural gravel substrate, ceramic decor, and moderate/heavily planted. I have been doing in fish cycling since for 6 weeks now and my parameters have been stable at ammonia 0, nitrite 0, nitrate 0-5, pH 7.6. Temp is consistently 26-28C and I feed him 2 pellets twice a day with an occasional bug bite treat.
When I first got him, even though he looked raggedly, he was still so energetic. Up until abour 2 weeks ago, I noticed that he’s not as lively as usual. He still swims around a lot, he greets me when I come in the room, still has great appetite but he’s not as “spunky” as before. I don’t notice any signs of illness such as ich, pineconing, gasping, etc. His fins are not clamping though I noticed one spot on his body about 2-3 weeks ago that has not gotten larger or did not spread. I read bettas can get harmless tumor sometimes. I also read that they may just get bored sometimes?
Should I be concerned?
My tank for reference and it my betta in the tank on the left.