There are many varieties of Tilapia that can be caught in the country.  All of these species were introduced.  Tilapia can be difficult to catch at times because they primarily feed on vegetation.  I have fished for them in may lakes and rivers here in laguna and have caught them on many different things including worms, doughballs, corn, spinners, small plastic worms, flys, and more.  The first Tilapia is a 9″er that I caught in the Mabacan River on a worm.  The larger tilapia are known in this area as Pla pla.