I had a green clown goby in my 4g pico and that was pushing it. I would get liek a whole bunch of inverts. pompoms, sexy shrimp, golden coral banded shrimp, maybe a small fire shrimp, some neat hermit crabs....there's a bunch of cool inverts to get. And if the lights good enough you can always do low light corals
180g Reef - 60g Rimless Reef -90G FOWLR- 125g Malawi Cichlids- 40b REEF- 34g Fresh Planted-working on- 20L FOWLR- working on
I have a mix of many different saltwater fish amongst my tanks, but I love my Tangs most of all.