you Guys cant imagine from where i got those cable i fished them myself from a secret place in the Nile river at Egypt , and Mr EdCal they are not that aggressive but they were very aggressive during the breeding they toke about 75% of the tank
Assuming they weren't introduced to the nile, I'd go with Tilapia zillii as well ... it's the only red bellied tilapia native to the nile that I can find.
Chef - Still trying to find a good match. All the zillii I have seen have a lateral band, the tilapia spot in the dorsal, and red bellies. If I were to guess, I'd say yours is a rendalli given color and availablity.