Wednesday, November 25, 2009

We have swimmers!!

If you look right beside the chiller tube, you can see the tail of one of our brookies. This is in the tank in my classroom that is being kept a few degrees warmer. They seem much more active, and there are many fry that are starting to swim to the top. We have stated putting small amounts of food in the tank to begin the training process.

The fry in the lab are still in the basket, and not anywhere near as active. They are being transferred into the gravel today.

Friday, November 20, 2009

Genetic Mutation

While cleaning out the tank in the science lab yesterday, we discovered our first mutant of the year. A siamese twin that hatched but quickly perished. The fry developed two heads, but was attached at a single tail right behind the dorsal.

He has now been preserved in alcohol for future use!!

Tuesday, November 17, 2009

Hatch is Done

Fry in the lab tank... It appears as if most of our fish have hatched from the eggs. They are moving around quite a bit right now, especially the fish in the gravel already.

Interesting note already - we have taken a lot more dead fry out of the hatch basket than out of the gravel. I don't know if this is because we can't see some of the dead ones in the gravel, or if there is a significant difference in mortality. We will have to follow this closely...

Look close...fry in the classroom tank...