This project aims to compile nation-wide distribution records for tilapia in Kenya and Tanzania using the free to download and use smartphone app 'TilapiaMap'. This will provide an easy to use resource for rapid identification of tilapia in the field accessible to all. These observations are mapped and data made available for free download, so that developments and species distributions can be monitored and ultimately made available to policy makers. The project will provide training in species identification and help with species verification.