Oh, i had a SRD FH for my dad's father day present..
It was in a 2ft tanks, with overhead filteration pump..
It had the shows the same sign as the parrot fish of my friend..
i was very anxious and called for alot of help but none were useful.. ended up i asked the seller to pay my house for a visit, ended up he said it was what "parking disease"..
He also mention he see nothing wrong on the outside for my FH and it mind be internal problem..
Thus he sold("ripped") me off any 13 bucks for a "Hole-In-Head" med from octozin.. and i put the tablet into the water, the next day, he was lying at the bottom of the tank and gradually showing no sign of life and...... die..
i was super devastated.. and had it buried at night after showing to my dad..