priscilla tetra

http://fishprofiles.com/files/profiles/pristella.xml

The scientific name is Pristella maxillaris and common X-Ray fish... I think this is what you are talking about.

Pristella%20maxillaris.jpg
 
They are not as good shoalers as my cardinals or even my black skirts, but they do add a nice bit of contrast to my tank and are active and peaceful enough. They like to try and eat anything, even peas when I try to feed my clown plec. I've got six of the golden variety.
 
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