What species has the highest growth rate?

Well...dorado and brycon grow an inch a week I think. Arapaimas growth an inch a week too I think, although i'd imagine they slow down when they hit 4 feet or so.
 
Oscars will do an inch a month. Red devils will range from .5 to 1.5 inches per month. I don't remember growth rates for any other fish.
 
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