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I have a couple of beakers filled with zebrafish embryos. When will they need some kind of aeration before they are big enough for the adult tank?

April 26, 2017Adult Aeration beakers big Couple Embryos filled tank zebrafish

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I have a couple of beakers filled with zebrafish embryos. When will they need some kind of aeration before they are big enough for the adult tank?

1 Answer

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10 Posted

No, your baby fish in beakers do not need to be aerated. They should not be crowded enough for oxygen depletion to become a problem. We usually keep 20 to 30 baby fish in a beaker. I believe that the main consideration here is not the oxygen levels, but having enough food per fish so that they are not competing for it. A possible drawback of aerating small fish is that a too vigorous stream of bubbles may damage the fragile babies.