hi there,

can share a bit more info on yr tank set up i.e what are u using for filtration,how long have yr tank being set up and what other fishes are u keeping currently.

a bit of info on the bicolour angel.it is a dwarf angel and is usually quite hardy once it starts feeding. angels are notoriously hard to entice to eat and the bicolour is one of the ones that are reportedly one of the hardiest to do so.

hence,ppl normally advise to intro dwarf angels to a tank that have being set up for more than 6 mths with live rocks. liverocks are essential to some species of fishes as the microfaunas that grow there are a source of food for the angels when they are acclimatizing to yr tank condition.

IMO,before u add anode into yr tank best to slowly add liverocks in to give yr fishes a place to graze on and also hiding places for it to sleep at night or when spooked.

best of luck to you.