Thanks for the reply rich_one.
Unfortunately, i missed your reply before the forum went down for maintenance, and learned the hard way Amanos are indeed a food source for dwarf puffers.

On the bright side, my puffer is fat and happy.
I didn't try a nerite, and i couldn't find a oto anywhere.
I ended up trying a Ancistrus Claro. (Gold Marble Bristlenose Pleco) They have worked out well in my other planted tank, being much easier on plants than most plecos, and they stay small (2.5" full grown). He has been in there for a couple days now, no nipped fins, no signs of stress, and he's eating algae.
I'll post an update in a couple weeks for long-term compatibility... here's hoping.
