I've owned my betta for about a year and a half now.
My betta has always been very active and energetic.
I always change the water once every two weeks or so.
Since I don't overfeed him, the water has always been pretty clean.
Because the weather was getting cold lately, I put a submersible heater in his tank and he seemed to really like it.
I've had the heater in his tank for about a week or so, and I started to notice that my fish was really close to the heater. I thought perhaps he just likes being warm and didn't pay much attention to it. I fed him and he ate well.
And about two days ago, I just got a bit worried about him being so close to the heater, so I turned off the heater and took it out for a while.
That's when I realized that something was wrong...he stayed in the bottom of the tank on one side and couldn't really get himself to come up to the surface of the water.
I did some google search and read in some posts that some kind of bacteria could cause such symptoms, so I immediately moved my fish to an empty bowl with clean water. That's when I noticed that one of his pectoral fin is damaged...
He doesn't move much. But when I feed him, he comes up to eat.
I don't know if he burned himself on the heater or got some bacterial infection...
But will his pectoral fin recover fully?
Please advise. I don't want him to die...