ive had this pair for 2 yrs they were given to me from someone eles who has had them for 2 yrs prior. just noticed today my males mouth looks stuck open,it dont look like any thing is in there, hes not breathing heavy threw the gills or acting abnormal. my other fish are fine. my parms a good with the exception of my sal. 1.022 ive been slowly raising it to 1.024 which is where ive always run it. they have never hosted anything in the 2 yrs ive had them untill 2 days ago they started hosting my 3 headed frog spawn. anyone have a clue as to why his mouth is stuck wide open?