<<Please correct me if I am wrong.. But I do reckon Galaxie Maculata
(JollyTail) eggs can survive outside of water in a humid condition.
But I have yet to see someone to spawn the G.maculata.>>
You are not wrong Richard, from memory G. maculatus spawns in the estuaries
amongst the marginal and shore grasses on king tides and the eggs stay out
of water for a fortnight and hatch when next inundated.
The story goes that they go back to the same areas all the time and those
specific conditions are hard to emulate in captivity. I fyou collect the
eggs apparently they are not hard to hatch and rear.
Bruce Hansen