What fish have you had the least amount of luck with?

[Chief Tom]

Clown loaches for sure. Ive never been able to grow them past 5-6". It seems i always lose about a third of them within a month of buying a group.

I have a group now...down to 7 of the original 9 and one of those has recently developed that sickly look...probably be 6 soon.

They seem great for months, through water changes, cleaning, etc...then start dying one at a time. I'm on the 3rd batch.

 

[Chief Tom]

Fancy goldfish. I'm sick of waking up to my wife crying. For some reason I just can't seem to keep them alive. Not just online orders(which I'll never do again). I bought a pearl scale and he died within 3days. I couldn't even ask for the money back.

 

[Hendre]

I lost my guppies and corydoras within days of getting them (in cycled tanks at that) which was just weird. Will get some from a breeder in future, should be hardier