I recently asked the same thing and got great input, they do well as long as its with the smaller specie poly, ornates and the like will be able to eat it one day down the road, expensive snack. you will have to move the gold if you have one of the larger ones, to a lone tank or a golds only community (have seen this on youtube, would love to do so).
I currently have a red wolf with an ornate, he is only a few inches longer then the wolf so the ornate won't be able to eat him for months, which I'm still deciding if I'm going to sell him or set up a loner tank for him
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