1.012

I’d given up on all the test tanks other than the one with sg 1.008.  Today, though, I found post-larvae living and growing in two other tanks — 1.016, and the one between (presumably about 1.012.)

This suggests that this species doesn’t migrate at all — it may be that they can happily live and reproduce in brackish water, start to finish.  I’ll try to maintain a population in a brackish tank at length and see if they are able to mature and lay eggs.

Maybe these are dyed (or otherwise altered) C. propinqua.  The behavior fits, and all the importers give ‘Indonesia’ as their place of origin.