My Tetras do not go after the algae wafers, but my Golden Danio will. She's the worst, she's always fat and I have no idea where she's getting the food! Yes, even in a 29gal tank, the Danios are still bouncing off the walls and stealing all the food. My tank would be peaceful without them (they stress my glowlights) but they were my first 3 fish, I can't give up on them :(
I think 6 Neons would be cool, they are smaller and silly. Friend of mine has a bunch. Ummmm.... I love the look of the Rummy Noses!! But I am unsure how many you need to be safe with them. Someone on my Tropical forum lost a loach the other day... found him on the heater behind the tank. He jumped :( He was missing for a few days.
I have a missing Danio I haven't found yet, it's been 2 months.