Remember a basic point, the aquarium reared fish will likely be disease free especially when you keep out host of alternate parasite life stages which is generally realized indoors. The concern over disease is becoming so extreme you are taking the fun out of raising fish and chickens. You...
With tropical, immersion in a slurry of ice water is even faster. After about 30 seconds transfer fish into Ziploc bag and freeze them. Clove oil is no longer available for use in food-fish.
I raise fish for a living. Most raised in ponds and they can harbor a range of parasites that require fish eating birds as final host. I also raise crayfish that can harbor parasites that can cause serious damage to lungs and / or brain of critters not adapted to the parasites. The same fish...