I can't see your pics but with the information you gave it's almost certainly snail eggs. Neons are tricky to breed (and will eat their eggs I think) and shrimp carry their eggs, but Amanos can't successfully breed in freshwater anyways (they can produce and fertilize eggs but the larvae won't survive in freshwater). If the eggs are encased in a little sac they're snail eggs.
Edit: Pics loaded. Looks like snail eggs to me, though I can't tell what kind. Doesn't look like ramshorn eggs.