I'm planning on putting 2 or 3 fancy goldfish (Ryukin or Veiltail maybe) in a 44 gallon aquarium. Do any of you know if they have preferences as to decorations? I assume they like lots of open space and no sharp edges, but do they need places to hide or duck out of the light? The only decorations I'm really considering at the moment are 3 potted java ferns. I can't seem to find any good info about it.