I need help please. I'm confused on what route I should take. I had 4 fish in qt a clownfish broke out with brook and infected my lemon peel angel. Never bothered my flame angel or midas blenny. The lemonpeel sadly didn't make it but I ended up curing the brook. The fish showed signs of secondary bacterial infection so I treated for that and everyone is now healthy and back to normal except for my flame angel. He flashes on the pvc pipe several times an hour. So I suspected flukes. I treated with prazipro at full dose and the flashing stopped...2 days later I did a water change and the flashing continued again...added another dose of prazi. Flashing stopped. Like magic. 2 days later which is today I did a water change and the flame is flashing again. It's like when I put the prazi he chills out but as soon as I remove it he's back to flashing..never noticed any spasms from the meds. I did notice long stringy poop but it's not really white it's a mix of mostly brown with a hint of white. Any help would be greatly appreciated on what the next step should be. I was thinking fenbendazole. But I'm not sure