How To Euthanize A Fish With Clove Oil. After ten to twenty minutes of no gill movement, your fish is deceased. Then add 3 more drops of clove oil.
How many drops of clove oil to euthanize a fish? Fill empty container with water; 500mg of clove oil can quickly cause a painless death to troubled fish.
Wait until it’s breathing slows and it falls to the bottom.
The larger the fish, the more you need to use. Just like before, shake it up until the clove oil mixes thoroughly. But, if you leave the fish long enough, the eugenol will kill them. The next step is to drop the clove oil mixture into the container with the fish.