I guess you didn't read the whole article:
Unacceptable methods of euthanasia
are: freezing, boiling, chopping, removing the fish from water, using a seltzer tablet, slamming, pithing, decapitating, or flushing down the toilet
. These methods are slow, torturous, stressful or violent. Clove oil followed by vodka is both inexpensive
and humane. The fish goes to sleep like we might before an operation, and simply doesn't wake up.
I prefer this over all the others:
MS 222 [Tricaine methanesulfonate]:MS 222 is frequently used as anesthetic and a sedative for aquatic animals but in larger concentrations is the preferred method for euthanizing aquarium fish. It is approved
by the FDA
and considered humane
by the American Veterinary Medical Association
. It can be purchased through your vet or online. A bath with 250 mg
of MS 222 per liter of water is adequate. The fish should be bathed for a full 10 minutes to assure death.