Schooling fish

If you want a manic tank, get danios. If you want a more serene tank with IMO one of the most beautiful, best schooling fish around go with Cardinals. Don't be fooled by the hype about pH. They can and will adjust to 7.0 to 7.6 easily if you keep the water "clean". Once acustomed to their environment, they are very hardy. Neons, on the other hand IME are a bit tougher. Many people are scared off of Discus thinking that pH again is an issue, but they also do fine in a bit higher pH.
Len
 
Some good schooling fish would be barbs, danios, or tetras. For barbs I would recommend tiger barbs, although I've seen different varaities of them. Danios could basically be any species because they are so easy to take care of. Tetras could be cardinals, congo, or basically any other type of small tetra possible.
 
If you like the way that neons look get them. Lots of people say that they are hard to keep but the truth is that they dont travel well. I have never had one that lasted less than a year if it survived the first day and night. Another good schooling fish is also Marbled hatchets. tougher than neons and more interesting shaped but much less colorfull
 
I agree with darkangel....australian rainbowfish are terrific for a number of reasons.....they're very colorful, social, easy to care for, and grow to a nice size.....they are hard to find, though, and more expensive than the usual aquaium inhabitants...generally, I pay between $8 and $13 for a good rainbowfish...lots of varieties, with the Boesmani and Turqouise being fairly easy to find....if you enjoy finding and keeping fish that not a lot of other people have, investigate rainbowfish.(in fact, it's hard to find many people that even know about them) They like warm water (78-80) and higher pH...7.8-8.0......but they adapt well and are very hardy.....plenty of water changes, like every other week, about 10-20 %, will keep them happy and well!
 
Rasboras people!!! I have Harlequin Rasboras and they are excellent schooling fish. Also Swallow Tail Rasboras are very good schooling fish. Any Tetra will do as well and don't worry about pH, that's why you float the bag for 15 to 20 minutes. Neons die very easily as they are very small, I had 6 in my 29G and they didn't last 3 days. Also what other fish do you have in the tank? Von Rio Tetras are very pretty fish when they school. They look like small black tetras with red in the back by their anal fins. Good Luck on deciding. :)
 
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