Ok ... Woke up this morning and found my Neon Rosy Barb somewhat swimming in a counterclockwise circle patterns. Not really swimming upright, had a slight tilt, but was at the bottom of the tank. Took a closer look and it is not moving it's left pectoral fin much, I can't tell if it's been nipped or injured ...it looks smaller/thinner than the other .. all other fins are fine.
I left around 11am It was in a bucket with aquarium salt. Get back about 4:30pm and find it;s swimming fine .. not in erratic circles or anything. Right now got him in a mini tank with an air-stone and tank substrate .. to keep an eye out. Will do PWC's from the main tank every few hours with the salt.
5 minutes after first put in the mini tank ... it made a dash for the surface and spiraled back down to the bottom ... swimming erratically like it did before and then back to swimming normally .. all within 10 seconds. The fin I thought was injured appears better?... tough to tell .. not using it as much as the other .. but more than before. Figure I'll keep checking on it for the next few days .. maybe a week, see if it develops anything new. I'm perplexed ... as much as I'd like to put it back in the main tank ... I've no idea what was up with it this morning.
The other fish are fine .. any thoughts?