Whats a good one for my Finnex 4G? He will be the only fish...of course, it's only 4 gallons. I know better than a clown, but will a Gobi of some sort work? Most people say 10G and up for Gobies......

Clown goby

^ agreed maybe a pistol shrimp goby like a blackray ?

Yellow-tailed Damsel

I want something a little different than a damsel.....
How bout this guy???
http://cgi.ebay.com/LIVE-HIFIN-saltwater-s...=item19b7abcadf

really small. he will look good in the 4 gallon but he will hide alot. my buddy had one.

check out this page. http://www.aquacon.com/blennies_saltwaterfish.html

most any small goby would work. I had a clown goby and he was awesome and always out and had loads of personality. And at lfs they can be had for like $10.

+1 to goby. Interesting fish. You could try for the ol' pistol/goby pairing

Hawk fish or an angler

If you lived close by, I would gladly bring you my yellow clown goby. I like him, but my trumpet coral does not.

i say nothing bigger than a small goby. Maybe a green banded goby, or a flaming prawn goby, red head goby, eviota goby or a trimma goby? There's actually quite a few gobies that stay pretty tiny. check out liveaquaria's goby section for ideas...

Talked to my LFS owner tonight.......he will order me whatever Goby I decide on. What is this pairing you talk of??? Pistol shrimp??

Pistols are pretty destructive. Neon gobies, clown gobies, are all good fish.