white jaw

[d2hpeter]

bought 10 rasbora yesterday. saw one got white lower jaw.
found one dead this morning with another 2 got the white lower jaw.
tank temp is about 27. Can increased temp to say 30 help?
had some bad experience with this before but don't know what should be done. It was quite deadly and kill fast.

[benny]

Although it looks like mouth fungus,/infection it could be a secondary infection from columnaris, a fairly common disease found in local fish shops. Best to quarantine your new fishes.

To treat this, you will need a few course of potassium permaganate treatment. There are also other medications for this, but the speed of the infection can be very acute. More often, it's cheaper to just replace the fish.

Cheers,