I've got peacocks currently spawning in my 20gal community tank. They're neat fish to be sure!
They aren't particularly shy once they get settled, and while they mostly live in the bottom third of the tank, they seem to like to mosey around and take in the sights. Mine have been fine as far as fin nipping goes with the threadfin rainbows they share a tank with even during spawning when the male gets a bit testy and territorial.
Depending on the source they can be tough to feed. Mine love live foods, but never quite get to the cone when I feed worms.. The worms kinda drift out of the cone and hopefully the gudgeon sees it. Because of this I've taken to sucking up a bit of worms in a syringe and injecting them into a stand of rotala nanjenshan and watch the gudgeons hunt the worms in the plants. Mine will eat flakes if one drifts by and a threadfin isn't around to scoop it up faster than the gudgeon can, but rarely will they go to the surface to take flakes.
Hope that helps.
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