gizmo 69

my zebra danios have laid eggs and I have never bred them before how can I tell if they are viable eggs?

jgon_

Very easily. If they are clear they are healthy (youd have to look closer to see if they were fertilized, just assume they are). If they're opaque white, they're dead (or unfertilized eggs decomposing).

gizmo 69

thanks for the info. I guess it will a wait and see as they were just laid last night.

jgon_

You should be able to tell which eggs are viable within 6hrs of fertilization.

gizmo 69

we have babies. most of the eggs hatched and the young are now free swimming. can't tell how many as they are so tiny and hard to see. we check the filter daily and put the wee ones back in the tank. thanks for the info.

jgon_

Enjoy your new fry! Are they in the same tank as the adults? It'd probably be best to seperate them.