Are my clowns sick?

[SAMSHUNG]

Any idea if they are wild or captive bred clowns? My captive raised Percula has been a champ since day one. My other two wild Perculas didn't eat too well at first but eventually warmed up to mysis and flake food. One of them also had white stringy feces which wasn't a good sign so I treated the food with one course of Seachem Kanaplex and Seachem Focus. It seems to have worked and neither Clown exhibits any ailment and their poo seems normal-ish. (I'm no expert, just sharing my experience)