Marko, the embers are nice, I've kept them many times in the past. They're very active and school decently. So far it seems like they usually just hang out in the front right of the tank where there's some nice open area for them. Occasionally they'll swim around the tank and it looks really awesome when they do. Nice color on them too. Not shy at all. I added them in at night and by morning they were swimming all around. They're going to stop schooling eventually though but oh well, maybe I'll add an apisto or something to the tank.