Fry & Food

This Monday, I’ve starting hatching fry, at a modest scale. Usually, that requires some preparation, Artemia nauplia need to be available when the fry hatch, since these definitely want to eat straight away. Since it is still cold outside, hatching the Artemia would require a heated space. Later, from May on, they can just be hatched outside, in a flat tupper with no aeration. I decided to circumvent that for the moment.
So what I got is a lot of small Cyclops and other small pond food and I now raise the fry on that. Using nets of different mesh sizes, I selected only the smallest invertebrates. I also carefully avoid to feed Chaoborus larvae. Last year I experienced that these are very fond of killifish alevins and manage to kill them all. Last year also, I managed to raise fry exclusively on pond food very well. So all the energy that took, was me some minutes scooping food and sieving it. No heating, no salt water, no aeration. And an extra bonus: I had to add food to the fry just once or twice a week and did not have to remove leftover Artemia.

The amount of fry is still modest, but there are alevins swimming of Austrolebias toba, arachan “Arroyo Chuy” and vazferreirai “Parque Rivera”.

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