Thursday, January 26, 2012

Trout Live Food Experiment

The second graders at Cayuga Heights completed their first trout experiment today with the help of Trout in the Classroom instructors Bill, Michael, and Josh. (Big thank you to them!) Students had to make a hypothesis about whether or not the trout fry would eat the live food (daphnia) placed in a beaker with each fry.  The students created a hypothesis based on their previous knowledge of the trout and their eating patterns. Then students tested their hypothesis with a group by feeding live daphnia to a trout and counting the number of daphnia eaten (out of about 10) over 5 minutes.

Most students predicted that their trout would instinctively know to eat the daphnia and the majority proved their hypothesis to be correct. One trout must not have been too hungry during the experiment and opted not to eat any daphnia. The majority of the trout ate all the daphnia presented to them during the experiment. Enjoy some photos below!

We also learned an important lesson from our trout this week... never bite off more than you can chew. This little guy didn't survive the week after he indulged on one of his tank-mates.

1 comment:

Anonymous said...

AWESOME pix- especially of the unsuccessful predator! I wonder how many tries it took for him to actually get a tank-mate??