African cichlids are generally very territorial, and they'll fight and even destroy one another if you keep the wrong species, in the incorrect quantities, or in the wrong tank set up. Additionally they have to have tough, substantial-pH water to thrive, so that they aren’t the best choice for newbies. https://pearlaquatics.my/how-to-choose-the-best-sobo-aquarium-pump-for-your-aquarium/