Found these on my glass today and was wondering...I don't have fish or anything to eat the eggs yet, so here goes. Its the little things about 1 o'clock and 8 o'clock according to the big snail. (funny since he's about 3/8" long).
6 lines are known to slurp them down. manual/natural removal would be the way I would try to rid them instead of the headache that comes with using a medication like flatworm exit.