It often seems that as conservation-minded aquarists, we presume that captive-bred, farmed fishes are preferential to wild-caught fishes in every way. Mike Tuccinardi looks at the Rio Negro fishery for wild Cardinal Tetras in his article "Cardinal Sins", and explains that the cost of the trade shifting to farmed Cardinal Tetras may be the loss of a sustainable fishery and the environmental protections it creates and maintains. If the trade is lost, speculation suggests it could be replaced with much more destructive forms of subsistence.