Question

Future Fish Farmers of Malawi
Background




Aquaculture (fish farming) shows great potential in the Zomba district of Malawi, Africa (source). Scientists designed an experiment to study the effect of pond structure (source), like those shown to the right, on fish growth. The researchers (source) added one of three species of Tilapia (shown below) to ponds of varying size and depth. The ponds were fertilized with chicken manure and the fish were fed a supplement of corn bran. The average weight of fish in the ponds were measured monthly for a total of six months. You will be using the evidence collected in this investigation to explain how genetic and environmental factors affect growth. You will also be making recommendations to future fish farmers of Malawi on fish and pond type.




Tilapia Species


Lake Malawi Tilapia

Red-breasted Tilapia

Shire River Tilapia



(Source)



(Source)


(Source)



Experiment 1 - Pond Size


Smaller Ponds

Larger Ponds





Question
Using the data above, choose ALL of the statements that are TRUE. (2 points)
Responses

The pond size did not affect growth in Shire River Talapia.
The pond size did not affect growth in Shire River Talapia.

A bigger pond resulted in more growth for most species.
A bigger pond resulted in more growth for most species.

A smaller pond resulted in more growth for most species.
A smaller pond resulted in more growth for most species.

If a fish farmer wanted their Red-breasted Talapia to grow more quickly, they should put them in a bigger pond.

Answer 1

The pond size did not affect growth in Lake Malawi Tilapia.
If a fish farmer wanted their Shire River Tilapia to grow more quickly, they should put them in a smaller pond.