Raising Embryos


Collect the eggs and place them in a shallow dish (a finger bowl works very nicely) for viewing under a dissecting microscope. With a pipette, transfer the healthy looking eggs (see Healthy Eggs) to a 250 ml beaker containing fresh system water. Try to avoid picking up any debris along with the embryos to reduce the chance of contamination.

Each beaker should contain no more than 25 embryos in about 200 ml of water. The water in the beakers should be changed daily.

Begin feeding the embryos on the 4th day. You may feed them live paramecia from a culture (see Raising Paramecia) or feed them Liquifry that can be purchased at any tropical fish store. Use 5 ml of live paramecia or Liquifry as specified on the container. Feed twice daily.

At 9 days, transfer the fry to a 1/2 gallon container and continue to feed Liquifry or paramecia mixed with baby fish food or live brine shrimp larvae. (Brine shrimp eggs can be purchased at any tropical fish store.)

At 14 days, discontinue the Liquifry or paramecia and feed only the baby fish food or the brine shrimp larvae.

At 21 days, the fish may be transferred to a regular tank. - Don't forget that big fish will still eat little fish at this stage, so they will need a separate tank.


Healthy Eggs ... What they do or don't look like

1 . Healthy eggs are transparent and can be observed dividing every 20-40 minutes or so under a dissecting microscope.

2. Unhealthy eggs can look like opaque and white balls of mold or a perpetual single-celled egg that has a bit of condensed matter at its top.

Note: This second condition is sometimes hard to see. Practice helps, but the lack of cell division gives it away.