djr

I have a new 20g high tank. No idea what to put in it.
Cycled and ready to stock.

angelfish220

Well, it depends on what you like.

Here are some ideas.

Schooling tank
5 ottos- 10 inches
6 neons or black neons or glowlights, depending on your favorite- 9 inches

Livebearer tank

trio of platies (if you dont want breeding get 3 males) - 6 inches
trio of guppies (again or 3 males)- 6 inches
male swordtail- 5 inches

Community Tank

1 Bristlenose pleco- 4 inches
6 neons or zebra danios (depending on your preferance)- 10 or 12 inches
1 gourami Pearl or Dwarf- 5 or 3 inches.

Blub

Well, the problem with tall tanks is this: There is not as much swimming room. So, stock it as you would a 10gal.