My experiment didn't work. Things were cool for about 3 months in my FOWLR, then one of my golden puffers started messing with the other. I am selling one of my 2 GP's. Will sell either, keep the other. 1 is full gold, about 7" and I believe in an Undo variant. The other is more like 9" and from the Christmas Islands. A brighter gold/yellow, but dark fins with spots. I have them separated. Both eat everything. I can send pics to those interested if you PM your cell #. Asking $230.