Conversations of the Universe

1: Oh look! Theres gold fish in there
2: Where? I dont see any fish
1: there right there! *points at a tiny black silhouette which quite often pokes the water surface from below*
2: you call THAT a GOLD fish? its not even gold in colour!
1: well, it does look like a gold fish, only its not gold in colour
2: its a Coal Fish then...