You need to link the game to your Facebook account to invite friends. To do that, go to the game's settings. Once that's done, all your Facebook friends who play Fishdom will be automatically displayed on your Friends list. Add other players on Facebook to add them to the list.
You can find more friends on our fan page on Facebook.
Please be aware that access to Facebook programs and services can be restricted in certain countries or regions. In such cases, we comply with local laws and regulations.