I need help diagnosing what disease my idol has. Ive never seen this disease before but im thinking its either a virus or parasite.
It started as this for a few days :
And has progressed to this overnight two days ago :
Visually it reminds me of stress spots on a powder brown tang but more severe. The spots (originally) have progressed to become more like patches however they were never raised from the skin.
In terms of behaviour, the idol has been eating mysis and alage sheets for about 2 weeks, steadily getting settled in and doing very well until this disease struck and i worry that the fish is beginning a downward spiral due to being less enthusiastic about eating now and seeming somewhat physically irritated (swimming in front of one of my powerheads, not being as social as usual as swimming quite erratically sometimes).
It started as this for a few days :
And has progressed to this overnight two days ago :
Visually it reminds me of stress spots on a powder brown tang but more severe. The spots (originally) have progressed to become more like patches however they were never raised from the skin.
In terms of behaviour, the idol has been eating mysis and alage sheets for about 2 weeks, steadily getting settled in and doing very well until this disease struck and i worry that the fish is beginning a downward spiral due to being less enthusiastic about eating now and seeming somewhat physically irritated (swimming in front of one of my powerheads, not being as social as usual as swimming quite erratically sometimes).