Open mouth

Any ideas why my velvet neon damsel keeps opening and closeing his mouth rapidly for the last 3 /4 days, opens round 2/3mm?

 

Not enough O2? Does he hang around the top only? Luna

 

water too warm?
this is most likely a slim chance. im just throwing it out there though. its happening to my fresh water tank as we speak. so annoying

 

For o2 i have a koralia 2 pointed up at surface,+ my return pipe from cannister filter, then theres the bubbles that hit the surface from the airline skimmer, Lees skimmer medium, the temperature is set at a constant 80f?

 

osund slike a lack of O2 to me too. Try an air pump and wooden air stone, just to see if it makes a difference

 

I would also lower the temp a little(77-79) The higher the temp, the less O2 is in the water. Luna

 

when i put my arm in the tank it feels quite chilly but i have 2 thermos and both are same temp must be correct...ok will give it a go and post results ,cheers guys

 

Had a airstone in the tank now for a couple of hours, fish still doing it, how long does it take , if this is the problem of course...

 

did you add anything to the tank like purple up or calcium or something,i had this happen to my blue damsel cause like a retard i added stuff i didnt test for.i tried an airstone too but it didnt work, he got worse,i netted him and ran the net with him in it back and forth across the tank forty or so times and that and a quick 10% water change worked.

 

No added nothing to the tank, did my 1st water change yesterday 10% and he is still doing today the other fish are fine???

I have attached a vid link...

052608203947.flv - Video - Photobucket - Video and Image Hosting

Its not very clear but his mouth is opening and closeing rapidly, he does not swim at the surface he is all over the tank...