This list may help you to make up your mind:
Community Fish :
Unless marked with a note, these fish can be safely mixed together in the same
aquarium.
Semi-Aggressive : These fish are usually peaceful when they are small, but can
become fin nippers or chase the others around the tank when they get bigger. If
you really want to put one of these fish in your community tank, you can, but keep
an eye on them as they get bigger.
Aggressive Fish : Do not mix these fish with any other type fish except similar
sized aggressive fish. They will bully and even eat smaller and more timid fish.
Community Fish
Anabantids
Dwarf Gourami
Flame Gourami
Opaline Gourami
Pearl Gourami
Siamese Fighting Fish/Betta(1)
Spiketailed Paradisefish
Catfish
Banjo Catfish
Bristlenose
Chinese Algae Eater
Corydoras
Green Catfish
Leopard Catfish
Plecostomus
Spotted Catfish
Upside Down Catfish
Charachins
Black Neon Tetra
Black Phantom Tetra
Cardinal Tetra
Congo Tetra
Emperor Tetra
Flame Tetra
Glowlight Tetra
Head & Tail Light Tetra
Neon Tetra
Rummy Nosed Tetra
Serpae Tetra
Hatchetfish
Pencilfish
Bloodfin
Penguin Fish
X-Ray Fish
Cichlids
Angelfish
Blue Acara
Discus (2)
Festivum
Ram
Cyprinids
Cherry Barb
Bala (Tri-Color) Shark
Black Shark
Blue Danio
Giant Danio
White Cloud
Zebra Danio
Harlequin Rasbora
Killifish
Lyretail
Livebearers
Guppy
Molly
Platy
Loaches
Clown Loach
Dwarf Loach
Horseface Loach
Unclassified
Australian Rainbowfish
Boesmani Rainbowfish
Boesman's Rainbowfish
Bumble Bee Goby
Elephant Nose
Rainbowfish
Semi-Aggressive
Anabantids
Honey Gourami
Kissing Gourami
Catfish
Bumble Bee Catfish
Charachins
Bleeding Heart Tetra
Black Widow
Buenos Aires Tetra
Silver Dollar
Cichlids
Firemouth
Severum
Cyprinids
Flying Fox
Green Tiger Barb
Red Tailed Shark
Rosy Barb
Tiger Barb
Tinfoil Barb
Livebearers
Swordtail
Unclassified
Archer
Freshwater Puffer
Aggressive
Anabantids
Black Paradisefish
Charachins
Red Belly Piranha
Cichlids
Convict
Green Terror
Jack Dempsey
Red Oscar
Livebearers
Knife Livebearer
Unclassified
Butterfly Fish
IMPORTANT NOTES:
(1) Only 1 male Siamese Fighting Fish/Betta per tank. 2 Males will fight to the death
if they are in the same tank! You can have as many females in the tank as you wish.
(2) Discus should not be kept with other fish other than catfish, loaches, neons, or
cardinal tetras. This is due to the fact that they are very susceptible to disease, they
require a warmer water temperature (85 degrees F), and are sometimes slow eaters
and will not fight for food.