black dots on clown

[roverT]

Hi A friend of mine has 1/16" black dots all over her clownfish. I recently donated a LTA to her and the clowns were playing in it. My question is could the LTA be stinging the clown or what else could it be? Oh yeah the dots are on no other fish except the big clown and is now a couple on the little clown, both clowns are new.