Came home today to my 6 line wrasse looks like he is struggling. Has been fine until i added a dose of mixed pods and a new coral. Today is water change day but levels arent much higher then usual. Does anyone know what's wrong with him? He seems to be stuck in a bent position and cant move but is still breathing & his belly also looks a little bigger. Pls help i don't know to do for him (pls excuse bad pics)