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Does the size of a fish tank determine how large a fish will

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by

Taylor Beebe

on 19 September 2013

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Transcript of Does the size of a fish tank determine how large a fish will

Does the size of a fish tank determine how large a fish will grow? :)
By: Kenzie Cline and Taylor Beebe
Problem:
Kenzie wondered if the size of
a fish tank determined the
growth a the fish.
Hypothesis:
If the size of the fish tank
decreases, then the growth
of the fish will decrease.
Independent Variable:
The size of the fish tank.
- Levels
10 gallon fish tank
20 gallon fish tank
30 gallon fish tank
Dependent Variable:
The growth of the fish.
Control Group:
The 10 gallon fish tank
Constants:
Same breed of fish, same food,
same brand of filters, same
tank cleaning schedules, same
location of tank, Marineland
Aquatic fish tanks, same ruler,
same length of fish and same
water temperature.
Materials:
- 9 gold fish (6 months, 4 inches)
- Three 10 gallon fish tank (Marineland
AquaticFishtank)
- Three 20 gallon fish tank (Marineland Aquatic Fishtank)
- Three 30 gallon fish tank (Marineland Aquatic Fishtank)
- 9 bottles of Tetrafin Plus Gold Fish Food
- 9 ALEAs XP-06 Plastic Goldfish Filter
- A ruler
- Small fish net
- 9 bottles of PondCare Algae Destoryer Advanced: 16 oz.
- Goggles & gloves (for cleaning)
Procedure:
Buy 9 goldfish (6 months old) (4 inches)
Buy 9 fishtanks (3 ten gallon, 3 twenty gallon, 3 thirty gallon)
Fill the fishtanks up with water.
Put the filters in each fishtank.
Put one goldfish in each tank.
Feed each goldfish a small pinch of food twice a day.
Clean fishtank every Friday using Pondcare Algae Destroyer and gloves and goggles for protection.
Continue feeding for 6 months
After 6 months, take each fish out of the tank using the small fishnet.
measure each fish in inches.
record the data
Size of Tank
(G)
Length of the Fish
(in)
1 2 3
Mean Length of
the Fish
(in)
10
20
30
5.2
5.9
5.8
5.7
6
6.1
5.4
5.8
5.9
5.4
5.9
5.9
The Effect of the Size of the Fishtank on the Length of the Fish
Length of Goldfish
(inches)
Size of Fishtank
(G)
Data:
Our data shows that a bigger tank does not influence the fish to grow bigger, but if the tank is too small it will stunt the fish's growth.
Trends;
Our chart has a steady growth rate for each trial. The 20 and 30 gallon tanks have a maximum growth of the fish once it reaches 1 year old.
Our data rejects the hypothesis because the fish doesn't grow according to the size of the tank. It grows at a normal rate but if the tank is too small it will die before it grows its full length.
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