none because mollies need 5gallons and up
Yes, just make sure they have enough fresh water to breathe. The rule is one inch of fish per gallon.
yes
I would say a bubble nest yet mollies are live berriers are they real mollies then?
30 gallon is a big space you could get 6 more but make sure to get male female 1:3
Bristlenose catfish
If your tank is large enough, you could add albino corys or some mollies
A total of four mollies can be found in the water tank
Mollies,Platies, Guppies, small Tetras (I recommend Black Skirt Tetras), Corydoras, (Electric or German) Blue Ram Cichlid, and last but not least............ Apple Snails. ;)
You cannot put a black kuhli loach in a 5 gallon tank at all, they need a 10 gallon tank at the very least. The maximum size that this loach gets is about 4-5 inches, so a 5 gallon is out of the question. As far as I have read, the black kuhli loaches like to be in schools of about 3-4, and you wouldn't want to have them alone, since the are community fish, they can go with platies, most tetra's, mollies, swordtail's, and small plecos. they just can't be alone or with fish bigger than them that will eat them. hope this answers you question.
mollies, tetra's, plecko's mollies, tetra's, plecko's
Wouldn't recommend putting a goldfish in a 5 gallon tank-regardless of what type or size of goldfish. This is because the goldfish would be stunted causing it to have an untimely death. The condition in which a goldfish is "stunted" is where the fish adjusts to its tiny environment so much as to stop growing. The fish will stop growing on the outside but will continue to grow on the inside. Goldfish are naturally messy and create a LOT of waste. This factor would cause the tanks water to be poluted which inturn could kill not only the goldfish but possible your mollies too :(. Two mollies is enough for a five gallon tank. If you truly want to get a goldfish you will have to house the goldfish in a 10-20 gallon tank with very good filtration