The main recognized humane method of euthanasia is clove oil. Doesn't take much and its very inexpensive. Use a half dozen drops of clove oil then when they stop moving, pop them into the freezer to make sure they are dead (clove oil is also used in very small amounts to knock fish out temporarily for necessary treatments).
Alternatively, you can bash them with a rock (sounds nasty but is supposedly humane).
Ice water and/or freezing fish without the use of clove oil is no longer considered humane.
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Tina
Puffers:
Auriglobus silus x2
Colomesus asellus x1
Tetraodon travancoricus x1
Tetraodon biocellatus x2
Tetraodon nigroviridis x1
Tetraodon baileyi x2
Tetraodon lineatus x1
Tetraodon palembangensis x1
The greatness of a nation and its moral progress can be judged by the way in which its animals are treated. - Mohandas Gandhi
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