Love the picos, yours is micro!
Mermaid Tail, Pencil or shaving Brush Macro would be fun. I'm hoping to do a little one in the future but probably my ole 6.6G. My favorite crab would be the Pom Pom.
And the mini Brittle star is also my favorite!!! There are a few online sellers.
I love these tiny tanks, I miss mine!!!.
Do you have a larger
SW?
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New to FW fish? First tank in a long time or EVER??? Need some info on keeping fish?

Start here - Aquarium Advice Article
https://www.aquariumadvice.com/guide...ater-aquarium/
FW Favorites right now Clown Loaches, any shrimp - SW Vase Red Mangroves