selective focus of zebra tilapia heterotilapia buttikoferi fish in a pond

africa african animal aquaculture aqualung aquarium aquatic band black buttikoferi captive cichlid cichlids closeup environment fish food fresh growth heterotilapia hornet lake living marin mouth nature nile river sea seepratilapia slippery stream striped stripes stripped swim tail tank tilapia tropical underwater water wild wildlife zebra zebratilapie zoo