The Puffer Forum

Folks who have pressurized CO2 systems for plants can sedate or sedate to death with CO2 fairly simply. Back when I was keeping SAPs I would lightly sedate them with CO2 for dental plate trims before I went to mostly snail diets for them. If not flushed out of their water, keeping them in the OD'd with CO2 water will kill them.

It might be too difficult with DIY CO2, I've never tried.

What about boiling water to remove all O2 then allowing it to cool and putting the fish in it? I imagine it would suffocate nearly as fast as boiling but w/o the burning.

I don't know about aquarium fish, but I've thought about ways to kill wild caught fish. Nothing seems to work faster than stabbing through the brain with a knife. It's not pretty, but all signs of life stop instantly without suffocation, freezing or sickening poisons. Some people club them or try to break their necks but their eyes keep looking around. That seems cruel. The quickest ways don't leave a pretty picture, but all I've ever worried about preserving was fillets anyway.

I have a 17 year old large fahaka puffer. I could never kill him in such a violent way. I hope he would just die in his sleep but if he's suffering, you can bet he'll be dosed with clove oil, gently falling asleep & dying peacefully.

+1 to Pufferpunk

I could never kill any animal so violently(except for mosquitos). I don't even kill my own lobsters, I buy them dead.

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I think people are very divorced from death, when I took my beautiful old dog down to the vet, he wanted me to just leave him! I was feeling guilty enough without just abandoning him. I come from a farming/subsistence hunting background, and if you keep livestock, you will always have deadstock now and again. It’s hard, but it is your responsibility to provide as humane a death as you can in the circumstances, I’m the go-to person in my area for injured pigeons, squirrels, and other wild animals.And when I got my Puffers I also got a bottle of clove oil. I hope I never have to use it, but if I do, I will do so without hesitation and then ensure death has occurred.