Hey CHINABOY, Have you seen this photo of an Altum angel? It is the nicest one I have seen http://belowwater.com/fish/orinoco/index.html On the bottom right hand corner, click on it to enlarge.
I believe it's the CAE that are only good for algea when young.
True SAE's you shouldn't have a problem with. and yes, black stripe thru tail, true SAE.