These early introductions of tilapia were intended to act as a form of biological control, combating the growth of weeds and proliferation of mosquitos. Later genetic studies indicated that at least two separate introductions to the native creeks and rivers occurred.
The first appearances of tilapia were meant to serve as a natural method of suppression, preventing the spread of weeds and mosquito populations. Further research showed that there were actually multiple instances of tilapia being introduced into the local waterways.