In this activity, you will weigh fish and determine biomass in order to formulate a proper feed ration. Because feed is a high cost, it is important not to overfeed.
Fish have a tendency to gorge themselves when overfed, causing a fatty fish.
Also, excess feed in the system degrades water quality as the feed decays. Additionally, underfeeding will increase the length of production time. Care must be taken to produce a quality product with minimum costs. I - Fill a four liter beaker about half way with water and weigh it using the balance. Use the tare function on the electronic balance.