Questions over hatching of eggs

[loohong]

Hmm...Doing some reading and found one web site recommend aeration when hatching.

No much experience in egg hatching so would like to post here to have some discussion.

Regards,
Wilson

[whuntley]

Eggs are living animals with really poor mobility.

That means you need to transport oxygen and trace minerals to the egg, and mild aeration often is a good way to go.

For many open-water killifish, like most Lampeyes, it is vital. If you notice, they tend to place eggs in a place of some current flow so the eggs will be constantly washed with fresh oxygenated water. I have even had some success tumpling the eggs with a rigid airline into the bottom of a tapered pilsner glass, not unlike the way we hatch bbs.

Most puddle killies, like Aphyos, do well in a shallow Petri dish, with frequent (daily?) water changes.

HTH

Wright

[stormhawk]

Wilson, the aeration is used in the egg-tumbling method for some African cichlids to simulate the tumbling motion they undergo while being incubated in the buccal cavity of the parents. Some other species will also hatch under such conditions but not all eggs appreciate this method of aeration.

It would be much appreciated if you could kindly specify the species or kind of fish that you're trying to hatch here. That will narrow down the answers rather than to generalise everything into a single post.

[loohong]

Hmm...A.alexandrii, S.suzarti. Would like to know whether aeration hatching will be good.

Thanks

Regards,
Wilson

[TyroneGenade]

No, simply fill a tub with cool water, empty the peat into it,. stir and walk away... Do not aerate the fry. The currents can tire them out, stressing them and then they die...

[loohong]

Roger that Tyrone.

Thank You

Wilson