What Nano fish?

[NewWorldWater]

I kept all gobies in my nano tank. The only hard part with a bunch of small gobies is their potential temperment towards conspecifics. I too keep small fish for spacial reasoning. My fish have included(and include) purple firefish, yellow watchman goby, tiger gobies and clown gobies. Unfortunately, so far, temperment is the biggest factor in keeping fish stocked.