Originally Posted by FuzzAz
2 - pearl gouramis (1 M, 1 F)
3 - dwarf gouramis
9 - cardianl tetras
6 - corydoras
what other types of gouramis are good to swap for the pearl? can I have silver dollars? what about a loach? I would love somthing that kept the snail population down.
36 gallons doesnt seem big enough
I'd say skip the Dwarf Gouramis. Put in a pair of Pearls, A shoal Of cories, and a school of cardinals.
I'm assuming that you have a 30x12x23" tank. The Pearls will need the surface area of a certainty. I'm also assuming that you are going with a lightly planted tank. That being the case, you will need to overfilter with a canister filter and spray bar (to keep the current down). Look for one that 's rated in the neighborhood of 80 gallons. If you plant the tank heavily, you could add some more fish. I'd go with a clown pleco and either more cardinals or a contrasting small tetra - maybe Kerris, rummys, glowlights, or green neons.
Alternately, you could go closet to biotope with the Pearls, 9 Harlequins or Espi's Rasboras, and 6 Dwarf Chain Loaches (Y. sidthimunki), thought that would run to money.
As for switching out the pearls, Your options are to switch them out with one of the Colisa species (Dwarf, Honey, or thick lipped/giant). Moonlights get 7" long and would want at least a 55 for a pair. Blues (Opalines) are pretty aggressive, Snakeskins get too big (11"). Ditto kissing gouramis. Don't mess with Chocolate gouramis unless you are 100% sure you can keep a true blackwater tank in pristine conditions.
Reasonable people may disagree on the Moonlight gourami's suitability here.