Description of the Independent Variable

This is the description of our independent variables, also can be used in your procedure for feeding the fish.

Tank 1: 100% fish meal,47% protein, 3x day, 1.5 grams.

Tank 2 : 75% fish meal/25% Algae , ~44% protein, 3x day 1.5 grams, 

(we do this for 2 weeks then change to 25% kale)

Tank 3: 75% fish meal/25% Chia,~ 27% protein,3x day 1.5 grams, 

(we do this for 2 weeks then change to 25% Quinoa)

Results of Consensus Discussion!

Hey Marine Biology students, here are some notes from discussion to reach consensus on the Tilapia experiment;

Round table discussion;
Daryl - constant tank with same food, other tanks change food
Jason - three tanks at 26degree,  changing the food is ok
Franco - three different food types over six weeks, every two weeks, change food type. All food must be researched in advance. Both mass and breeding rates.
Mark - keep the food same in each tank, but offer different food types in each tank.
Edgar - how would fish react (which will they eat, which will they spit out) given different food types. See which food will cause certain habits to change, and record mass. Change all of
Christina - changing the timing of the day that feeding happens. If fish are having trouble gaining weight. Cool with
Jada - is cool with us focusing on the food types.

Use this to write your introduction, variables, and hypothesis; 
This Tilapia experiment will use food types as the independent variable. This will include a control tank (tank #1) using the existing mixed feed, a vegetable based feed (tank 2) and a seed/grain based feed (tank #3). For the first three weeks, Tank 2 will use a mix of protein, with a kale / algae mix, and tank 3 will use a mix of sprouted quinoa and chia seed.  The dependent variables are the size (mass and length) of the fish, the color of the fish, any breeding that happens, as well as the behaviors of the fish, such as aggression and breeding.  The controlled variable all three tanks at 26 degrees celsius, and over the next six weeks, raise the temperature 3 degrees every 2 weeks. There are several other controlled variables we must identify.