I read the thread about the "red saums" before and honestly-I've looked all the pictures over up and down and left and right and I do not see a difference between them and the 'gold saums'. I'm not arguing, but maybe you can explain further-I'd sure like to hear it. I've posted this picture before, but this is my $5 PetsMart 'gold saum'. Everyone says the reds are supposed to be more colorful, but I'm not seeing it. Mine has a reddish tail and he's still a juvie. Yet he's not a 'red', he's a gold. Not sure what I'm missing but I'm open to hearing more.
Liz, to me yours looks like a gold saum.
Don't get A. Rivulatus confused with A. sp Rivulatus. We are only talking about A. sp Rivulatus.
Anyway, I see a difference. Very slight but the fish has an overall darker/reddish (if you will) background. I just may have to pick up some and take a few good shots to point out these subtle differences .