30 gallon freshwater aquarium stocking?

Since you have a swordtail fish already take away a platy and get 3. (1male,2female) 6 cherry barbs are ok. Get a smaller version of cories (ie.

Pit bull / Pygmy / peppered cories) peppered are my favorite;) but with Pygmy cores you could get like 6-8 1 female betta, ok I warned you about this before but since you must have it make sure it is the last fish you introduce to the tank so it won't claim it's terriortory and get aggressive. Dwarf gourami : caution with the betta. Tetras: either get ember tetras or dwarf rasboras which aren't tetras but a lot alike(6) Best of luck///:) cycle first.