Three New Data Charts!

Your goal is to make three charts that present the data about our Tilapia.
These charts will present data about fish size and mass over time, but require you to check for the average.

For fish size: Find largest fish and smallest fish for each day, and average those two numbers for average fish size. On days when only one number is given, use that number as the average size.

For fish mass: Copy the average mass for each day. Make sure you do not copy the total mass for three fish. 

An example of the first chart looks like this...

Tank 1	Av. Fish Size (centimeters)	Av. Fish Mass (grams)
10/28/2014	6.4	14
11/7/2014	5.4	18
11/14/2014	6.5	16.7
11/21/2014	8.1	18.7
12/3/2014	NA	na
12/5/2014	9.8	48
Overall Average	??	??

  

Find the answer to those question marks - what is the average of each column? 

Create one more table for Tank 2, and one for Tank 3. Once we have that data, we can really see which tank resulted in faster growth for our fish. We can also calculate the rate of growth for each tank, which is the amount of growth in the total number of days (39 days total?)

Notes from the nutrition information for food types. 
*No information on Algae nutrition - you will have to look that up yourself!

Data Pages from Tom's Notebook

Diagram of Nitrogen Cycle

Steps for mixing fish food.

Algae

Cut algae sheets into the smallest pieces you can. 

Label your baggie “algae pieces”

Place your pieces into the baggie.

Chia Station

Grind Chia seeds into a powder.

Label your baggie “ground chia”

Place the powder into the baggie 

Deliver the powder to the weighing station.

FM Station

Grind FM into a powder. 

Label your baggie “ground FM”

Place the powder into the baggie

Deliver the powder to the weighing station.

Weighing station

1. Weight out 6.7 grams whole FM #2, place into baggie

Label baggie “whole FM #2, tank 1, 6.7 grams” 

2. Weight out 5 grams ground FM, and add 1.7 grams ground chia powder.

Label baggie “chia mix, tank 3, 6.7 grams”

Deliver baggie to the mixing station.

3. Weight out 5 grams ground FM, and add 1.7 grams pieces of algae.

Label baggie “algae mix, tank 2, 6.7 grams.” 

Deliver baggie to the mixing station.

Mixing station

Take the bags from the Weighing station. 

Be careful  - do not mix different bags together.

Follow the instructions on the “recipe” sheet.

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.