They are not really a beginners fish, but then they are not fragile eiether. My sister (not the most scrupulious of tank keepers) has had hers for a few months and they are going great.
They will eat most foods, but Tetra prima works well.
Thats vey true, tank we have them in has a blue LED and they look very ghostly when they swim in and out of the beam.they also look really cool under "moonlight"