mouth wide open

[Charlespear]

I have a 18 inch Chagoi with his mouth stuck wide open, for two days he stays in front of the return, not eating.
1st day I netted and inspected and put to sleep for 1 minute.. Very gently touched his back teeth with a soft rounded rubber paintbrush handle with debribe on it, and about 1/2 inch past to make sure it was clear.........
Also, no infections inside or out of mouth. very clean pure white.
I can close mouth by hand, but it go's right back, wide open....
???????????????Any help or ideas?????????????
thanks, dylan

[dick benbow]

Dylan,
I have heard of this happening. don't have direct exoperience as to tell you what to do. I believe the mouth has been dislocated like a human's jaw. If it was me not knowing exactly what to do but having previously
learned there's no physical blockage, I think I would move and flex things around while the koi is under and see if i could get something to snap back.
I hope we get a response here soon from someone who has the right
how-to. Sorry i couldn't have been more help. The only thing I ever ran across was a stick in the gills which i was able to remove with a pair of tweezers while the koi was under sedation.
good Luck