My L200 pleco and what i believe to be 4 Metynnis Fasciatus (rare Brazilian striped silver dollars). They're small now but still keeping their striping as they grow.
Another thing I'd add... a prized fish doesn't have to be a rarity or expensive. It can also be something that was difficult to keep but you had great success.
Back when i kept SW in the late 90's, I bought a 3" sebae anemone for $12. I thought the bright white ones were healthy. Came home and found out it was half dead. Looked on the web and it seemed like ppl could barely keep them alive. In the end, I had that anemone for 3 years and it grew to over 12" wide housing a percula pair. Gave it to my brother.
My L200 has been alive for 2 years now. They're notorious for being hard to acclimate. Many many many die. Only paid $25 for him.