My Picasso Trigger appears to have gone almost completely blind approximately 8 weeks ago. He has absolutely no sign of illness, wants to eat, tries to eat, but cannot seem to see the food. It actually has to hit him in the mouth for him to eat it. I took him out of the main tank after about 5 weeks and treated him with tetracyline for 5 days in a sick tank, no help. I treated him for worms for 5 days, no help. Put him back in main tank and exactly the same. He is only about two years old and no other illness or treatment took place in main tank. The only thing I do that is somewhat different is drop in 4 droplets of concentrated garlic at feeding once per day. The trigger had ich when he was about 6 months old and he was freshwater dipped for about 5 minutes, and was treated with copper for a week and put back in and was perfectly fine for the next year and a half until this. I do not know how to train him to eat by hand or syringe either. He is a great fish. Anybody with actual experience dealing with this, I would welcome your expert advice.