[Peter Finke]

The fish on the pictures look very much like “blue lines”, at least in the dominant male. I suppose the other is of the same form.
The problem is the similarity between blue lines and spec. Sentang. They seem to occur in great neighbourhood and habe been definitely sometimes confused already in the trade business.
We cannot say it more precise. Only very big and sharp photos coukld help.
But the ventrals indicate blue line, too. And the fact that both forms are the most-traded Paros since years. Bot are variants of the bintan-species.