"D.L." wrote:
I'm not an expert on goldfish behavior, but I think for the most part,
goldfish of different types will get along if they are put into a tank
when they are all small and they grow up together.

I think that trouble starts when you add a new fish to an established
tank population.

The LFS keeps the Red Cap Orandas with the Orange Fantails, but they keep the Black Moors all by themselves.
The Oranda and Fantail I bought were from the same tank at the LFS, but they don't appear to get along.

I was at the LFS recently, and there was a dead black moor at the bottom of the tank,
and another black moor was nibbling away at it. Disgusting, to say the least.
Why don't the LFS employees take notice of these things before customers do?