I've just come back from the specialty LFS with a brand new LED White/Blue Light 20 gallon starter kit. One of the employees had a degree in Marine Biology and I've learned a lot and have recieved a lot of helpful tips and advice. I'm going to get these fish:
5-6 GloFish
1-4 Cherry Shrimp
4-10 Neon Tetras
2-3 Sparkling Gouramis
1 Bristlenose Pleco
1-2 Otocinclus
I was wondering if the tank would be big enough and the fish friendly enough to add some more fish. I'm really keen on getting maybe 3-4 Tiger Barbs, but would they be aggressive? And I thought about a dwarf ciclid, but I think it would need different water types...Please give me some advice and maybe a recommendation for a large, solitary non-aggressive fish that would compliment my tank and not attack or eat the others.
5-6 GloFish
1-4 Cherry Shrimp
4-10 Neon Tetras
2-3 Sparkling Gouramis
1 Bristlenose Pleco
1-2 Otocinclus
I was wondering if the tank would be big enough and the fish friendly enough to add some more fish. I'm really keen on getting maybe 3-4 Tiger Barbs, but would they be aggressive? And I thought about a dwarf ciclid, but I think it would need different water types...Please give me some advice and maybe a recommendation for a large, solitary non-aggressive fish that would compliment my tank and not attack or eat the others.

! I'll take the Bolivian into consideration as well. Now I'm just trying to see if the tiger barbs will work...I just don't want to overcrowd the tank and have them eat each others faces off 
