So about a week or so ago I posted a thread about a problematic harlequin rasbora who wouldn't close his mouth (might have had a piece of food stuck). Well, while I went on vacation I had my sisters watch as I expected him to die (and he did). So today I went to the LFS and got a few new fish, one of them being a replacement rasbora. Now I made the mistake of not looking too closely before I left and now I'm home and noticed this rasbora doing sort of the same thing... His mouth is open and it almost looks as if there's a chunk missing from under his mouth or something. I tried my best to get a picture of it. I'm in the middle of doing a water change before I float the bags (it's taking a little longer than normal as I'm trying to find the right temp since we just got a new bath tub installed which is whee I fill my buckets) and I'm not sure if it's anything bad, if I should risk putting him in there. I can't go back to the LFS right now, so I'm torn on what to do... I tried my best to get pictures but it's hard since he's acting pretty normal and is decently active in the bag. What would you suggest I do?