the most common "gold" algae eaters are
goldn sucking loaches aka gold chinese algae eaters
these fish become very very aggresive as they get older
here is a pic of one does it look like the fish you have?
My CAE's were about a year old at the LFS when I bought them, and I have seen no aggression. But really, be prepared if they do start to bother other fish because they can be really mean.