In summary, there is not much evidence to support the theory that caffeine concentrations in male territory-holding Betta splendens will make them exhibit more aggressive behavior when an intruder is visible compared to when it is in a calm state. Further research will be required to confirm this conclusion, but potential avenues of research is to better understand of the anatomy of Betta splendens and how it correlates with aggressive behavior when responding to caffeine. A potential implication of the current conclusion is that it can allow government and organizations to focus their efforts on removing other water contaminants from water rather than caffeine. This way, effort can be focused on removing more harmful contaminants from water such as nitrogen, metals, and pesticides to make our waterways clean .