Giant gourami maybe? They eat veggies as well as meat, no?
I appreciate all the feedback. I'm still laughing over the RTC comment. They might seem insignificant compared to the monster you guys are putting up but zebra danios eat practically anything I put in my tank. Or, at least, try to eat it anyway. It's so annoying at feeding time for the fish that need sinking good and veggies. They can't get near it till the danios are done.
Did anybody else come into this thread expecting a very different post?