ah, gotcha, my bad
I read everything EXCEPT for the words "softy tank" lol. Anywho, i'd stay away from the manderin in a 6...that'd be more work than the fish itself is worth...you'd be buying so much food...just to be feeding a 15 dollar fish lol. I mean i know you cant put a value on a fish that you love and whatnot...but you get my point.
I'd say go w/like a firefish, or maybe like a yellow watchman gobie w/a randalli pistol shrimp. I had that pair in my nano and it was awesome. Or many of the other watchman type gobies would work too...like the yasha haze or something.