To Euthanize Or Not?

[HappyGeorge]

I have a very healthy happy African Cichlid tank but whilst purchasing its occupants at the end of last year I bought a Pseudotropheus demasoni. He has always been very timid and had a strange eye, he has been fine for months but just recently he has lost almost all of his colour and stripes, and he has never really grown much he also looks like he has had an injury (either from other fish or from trying to hide behind the U4 filter) and appears to have completely lost his eye on one side. Although not in obvious discomfort he is just not right. So should I put him out of his misery, I do know the humane clove oil/vodka method.

 

[hamfist]

A fish can potentially very happily with one eye. However, it doesn't seem like that is the only issue with yours.

You have to make a decision about his quality of life and whether he has any chance of recovery before euthanising. In your particular instance, I would be thinking about whether I could get him in a little tank of his own to help him potentially recover.

BTW, the best method of euthanasia for fish is literally a sharp knife to cut off their head. Instant, clean death. As near painless as you can get.
Soaking a fish in a solution of a toxin that will kill it is almost certainly not painless. If you can get hold of lignocaine or some other such local anaesthetic, then yes you can give a painless death by letting the fish swim in it, and it will go to sleep and die. I have anaesthetised many fishBut most folks cannot source such a thing.

 

[SimoUK]

Dont kill it, I had A penguin tetra with one eye, he lived for like 2 years, before he died of old age