What is the one fish you want but can't have in your tank?

[Jekyl]

I want an octopus named Kevin. Wife says no.

 

[Paul B]

Pinecone fish. They get to big.

 

[AydenLincoln]

This guy! This was my favorite fish, had him for years, but had to downsize during a move and had to give him up. I hope to set up another puffer tank one day.

What a cute baby! How big is he and what size tank?