On Friday last, I may have stressed him out during his weekly water change. The new water was a couple of degrees colder than the water I was replacing. The next day, I noticed that he was not good at all. He was resting and supporting himself on his silk plant (the plant had been knocked around) or on the bottom of the tank, which is not normal behaviour for him. When he swims, he has a real difficult time swimming upwards (it seems to take a lot out of him, and afterwards he goes and lays himself down in the plant).
Otherwise, when he's not laying in the plant or on the bottom of the tank, he responds well and is still very energetic. Straight swimming is normal, and he still plays with my finger and flares like usual. His appitite is as healthy as before. B)
It seems that he had a struggle with the plant at some point, because his fins are partially shredded, and when I removed the plant during yesterday's water change, a chunk of Montgomery's tail fell from it. Some of his fins are looking ratty and there's this real stringy piece looking like it will fall off at any time.
Now, his tail has been a bit crimped at the ends for months. I didn't think much of it, but I'm thinking, not knowing but thinking I stressed my betta out and now he has finrot.
I don't know. I'm very bothered about his rests in the plant and on the bottom of the tank, so I would like to act on this quickly and get him some meds or something.
Do you think I'm right to treat this as finrot?
Thanks,
Amy Y.