I thought they might be flukes too but upon further reading they are 1-1.5 mm long and these are much bigger.
I've been using anti-slime and velvet treatment which claims to also deal with flukes but its had no effect.
Two Black Mollies and a Fighting Fish in my tank are infected with 1-4 long white worm like things protruding from their gills or base of their fins. (The 6 Neon Tetra also in the tank are unaffected.)
The 'worms' are 8-10 mm long and slim with a forked tail and cause a small swelling where they...