It's rare that you see one of these but Rainbow in Arleta has been selling them for the past several months. They keep them in the frag tank. If you are not looking for it, you will likely miss it. I have a weedy Rhino and it's one of the coolest fish around. I remember buying it and the wife told me to get rid of it. After she started watching it, she loved it. The picture attached is mine. One of the two at Rainbow looks like mine. The other seems to be a different species that doesn't mimic the "weed" look as much as the other.
