Hi all I have a Silver Arowana that has started to have the edge of both operculum curl out. I have heard several causes. Nutrition, lighting, tank size ect. Does anyone have experience with this deformity? Cause and solution of it?
And poor water quality, correct all the factors you mention, see if condition improves, if not, surgery may be an option, although I have not had to deal with this condition personally.
If you google the condition and surgery you'll find info on it, have a look at this video on how to sedate an aro for surgery