Well last weekend I went to petsmart & I purchased three long fin danios to keep my 10 gal cycled before I gave my crayfish a new home. They were in there for about three days before I removed them and added them to my 29 gal, anyways two days ago I notice some little things swiming around & stuck to the glass. I know danios lay eggs but how long does it take for them to hatch? & what do I have to do for the little guys to survive? Thanks