Guys, my aba-aba injured its mouth.
I noticed that it was behaving strange on Saturday evening, it wasn't swimming around the tank like usual. I thought that it was hungry, so I plopped in a catfish. It would chase after the catfish, corner it but then let it swim away. This has never happened before. It would normally just kill it on the spot.
On Sunday, the catfish was still there. On Monday, the catfish had eaten up the cleaner shrimps and has gotten fatter. The aba-aba seems to be leaving it alone.
I noticed that the aba-aba's mouth was slightly open, like it's saying "O". It's usually closed, and it has the smiling face appearance. Now, it just looks in pain. And there is also some whitish skin in its mouth.
Just now, I sat there observing it and it opened its mouth and shook its head violently to try and get rid of the skin in its mouth. I saw that its tongue was injured and there was blood on the inside of the bottom jaw.
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I don't know how this could have happen. It does like to move the sand about in the tank, but so far, for years, nothing like this has happened. And it usually eats up the catfish whole, so it can't be the spikes on the catfish.
The aba-aba seems to come close to the glass and lift its head for me to see the injury.
What should I do? Is there any treatment or something that I can do?
There aren't any fish vets that I know of.
I don't want it to die.