All the barbs nibble plants, though some do it a LOT more than others. Your tinfoils will chew on them, but if you keep them in veggies (Romain lettace, cucumber, zucchini slices, apple slices, etc.) clipped to the side of the tank during the day they'll leave them pretty much alone.
Originally Posted by UrsaMajor
As far as not eating at all, Java Ferns and the Crinum species no herbivore I know of will touch. I've never had them mess with low growing live Cryptocorynes, though they have trouble resisting leafy Hygrophilas. Again, as long as you keep them in veggies they like, they'll pretty much leave plants alone. Without them, things like sword plants and vallisneria would be lunch.
I'm sure you know to balance vegetation 60 or 70 percent with meat based foods for your barbs for complete nutrition.
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