Your header says this is for a science fair. I assume the fair has some sort of supervisor, a teacher or administrator, who has to accept or deny admission to proposed projects. Suggest you run your proposal past this person rather than us.
The first question likely to be asked is "What hypothesis is the proposed project intended to test, and how will you use your results to demonstrate if the hypothesis is proved or disproved?" In other words, what exactly are you trying to accomplish here? If you and your partner can answer that question you will probably not need to consult us any further.
that said I find it most unlikely that you are going to be approved for any experiment involving living creatures higher up the evolutionary ladder than planaria, or possibly worms.
If you are going to experiment on animals in any way you are expected to have an important reason for doing so, and a lack of alternative methods for proving the question. (Or else a lot of money/profit/some executive's bonus at stake, ie product testing of potentially dangerous chemical compounds on animals for cleaning products, makeup etc.)
Not wanting to discourage scientific curiosity but I think based on what you have told us here your project's intended goal is not sufficiently well-defined to meet this test.