Bottom line, what could cause this? A vitamin deficiency (he won eat garlic, Selcon, or any other flake or food than that Tetra marine stuff)?
>>Garlic won’t provide vitamins or nutrition to fish (think about it, how often do fish get their nutrition from garlic in the wild?), but it has been proven to have a slight to moderate antibiotic effect. The food he will accept can be soaked in Selcon prior to feeding, but you MUST be persistent. Also, Nasos do like some meaty foods, have you offered him the irresistible krill? Variety, especially with such a fish, is KEY. He is behaving like a pet poodle, and you’ll have to stand your ground when it comes to sampling different foodstuffs. These fish can easily go several days without feeding – if he gets hungry enough, he WILL try it (assuming he’s not actually ill, which I don’t believe is the case at this point).