Thanks I know pic isn't the best but pretty sure it is brooklynella just from research he is swimming rapidly around my tank and his top fin is down looks like it's gone he has a really pale white color and white blotches all over his body my tank is going on 7 month's old as far as parameters I keep my alk at 9.4 nitrates below 5 ppm phosphate is consistent at 0.05 calcium is always high 425 ppm or higher and my salinity is always at about 1.025 or 1.026 right where it should be I dipped all my corals so don't have any idea how any parasite or disease would of made it into my tank but recently got a splatter bta I didn't dip but was told by the tropical fish store where I purchased that I didn't halfto