One more fish for my 20g?

[Anonymous]

Well, the 20g now has two trimma gobies and a small firefish in it. Already Yumiko's asking if we can another fish, given that Trimma gobies just tend to sit in the same place for most of the time (kind of cool - like mini hawkfish, but it would be nice to have some movement as well).

So what are my options? Ideally something that stays small, is non-aggressive and swims towards the top of the water column would be good.

Or am I just better staying as I am?

 

[Anonymous]

Hmm, I've been looking at my local LFS's website and don't really see anything that fits the bill. I may just stick with what I have. :?