High Quality Content by WIKIPEDIA articles! Velvet disease, also called gold dust disease is a fish disease caused by the dinoflagellate parasites of the genera Oodinium, Amyloodinium or Crepidoodinium which gives the fish a dusty, slimy look. The disease often infects fishes in tropical aquaria. The parasite is single-celled and enters the slime coating of a host fish in its motile juvenile stage where it matures. The mature parasites break through the slime layer and drop to the bottom of the aquarium and attach themselves to solid surfaces. Here they form a cyst, which develops into numerous new juvenile individuals known as tomites.

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