Rhinogobius Duospilus! Finally! Breeding attempt log.

The first one died that night. No hatching the next day, but yesterday 3 more hatched, and they're all doing fine this morning. They're hopping around on their big eggs sacs, and chasing tiny critters I can see in there. I'm going to try alder cones and a little bit of salt next time there are eggs to hopefully get a higher hatch rate.
 
I'd add a very thin layer of sand, just enough to cover the bottom. Seems like tiny fry do better with some sort of substrate than a bare glass bottom IME, though I don't know why.
 
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