PREDICTION
To be useful, a scientific hypothesis must be testable in some way. This means that scientific hypotheses must lead to specific predictions that can be tested by further observations or experiments. Each prediction begins by restating the hypothesis and then stating a specific event that will occur if the hypothesis is valid.

Some possible predictions based on the selected hypothesis include:

If shrimp color is derived from the color of the algae, then:
... shrimp will change color when their diet changes.
... shrimp will change color when placed in a tank with algae of a different color.
... shrimp will change color when they can see algae of a different color.

All of these possible predictions are testable. That is, an experiment or an observation can be made to determine whether the prediction is supported.

For this example, we have selected the prediction:

If shrimp color is derived from the color of the algae, then shrimp will change color when their diet changes.