ok i will agree with the first way to uthanise (or however u spell it) a fish but wtf "chop its head off and then stab its brain???" i have a pond in my back yard and when a fish is injured which has only happened 3 times we dig a hole take the fish out in a net and cut it up with a shovel the fish being out of the water is extremely stressful and the time it would be flopping around and stuff is just cruel im not going to let my fish be sloughtered but i was wondering if their was something that i could put a few drops in his water and he would just fall asleep but i definately dont agree with n e method but the one of chopping their head off and i wouldnt do that with a BETTA!!!!!! and as i have had this betta and many other betta and i have bred betta i think i know when it is sick so uh yea their is no cure this is either a cancerous growth or a tumor which is untreatable!!!! but thanx