What Types Of Silver Dollars Can Be Mixed?

[mike_nofx]

I really like silver dollars, and i know that if i want them, i must have at least 5 as they are schooling fish.

Does it matter if all 5 silver dollars are the same type or different? i would prefer if some were different.

Also, when buying them from the shop, must i buy all 5 at the same time? or can i buy 1 a week, or 2 a week over a few weeks? as putting 5 in the tank at once might be too much.

The tank i will be getting (on friday) is 90+ gal. The fish i already have are 2 Black Ghost Knifes, a Bristlenose, and 2 neon tetras (which will soon become food, i know).....

Thanks

 

[Anthony!]

we are in such a similar situation!! I have a 90 gal, w/ 1 lonely silver dollar, and a BGK. BUMP!! hopefully somebody'll come along and answer this for the both of us!

 

[Gage]

i had a barred silver dollar, 3 normal silver dollars, and 1 red hook, and they all schooled together, i would think all the types will all school together.