Quick answer please, How do i humainly kill a fish...Daughter is out for a bit

[josaphine32]

Hi, We have got a Neon which is over six years old, and during this week has gone very dark, to very unbalanced and not very well at all, ive been to fish place bought stress coat water tonic, there is nothing wrong with the water ( had it tested) I cant look at it any longer it is just twitching and still breathing after seven days of no change, I have seperated it two days ago in a floating bag in the tank as the others started to nibble at it, Daughter will go mad here but its unfair on her to sit and watch it it is constantly on its side, and i just want to end it now......but i cant squash it, so any helpful answers will be most appreciated.

many thanks
jo

[hammerman]

Ive always banged my fish on the head but oil of cloves is the most humane way.