I have had this wrasse for 4 months. It was eating fine and healthy until I saw some scratching. Fearing flukes, I dosed the tank with praziquantel powder. All other fish are fine and normal except this one. Post the praziquantel treatment, the wrasse went into hiding and stopped eating. It emerged from hiding last week with these white scars on the sides. Currently it is not eating but swimming around erratically near the surface. As it's a Fowlr tank, I keep it at 28 ppt salinity and also have a UV sterilizer attached. Have a Bioreact 120 to with biopellets to control nitrates.