Temensis Peacock Bass (Cichla temensis) is the largest member of the peacock bass genus and is a top level predator in their native South American river habitat. They are most often found in slow moving or still water environments like lagoons, backwaters and shoreline pockets. While Temensis Peacock Bass spend a good portion of their time in calm waters, they will readily move out into faster waters to feed and to ward off potential competitors. Temensis Peacock Bass are used to environments that have warm water year round, with temperatures reaching upwards of 86° during the day and around 80° during evening hours. Their native river habitat's water conditions are acidic with a pH range of 5.0 to 6.5 and a water hardness between 5 to 15 dH; as well as, fast flowing with a large volume of water passing down from the mountains on its way to the ocean. Cichla temensis have evolved perfectly for their environment with long sleek bodies and powerful pectoral and anal fins, which they use to maintain ambush positions in rapidly flowing waters and ambush prey. Temensis Peacock Bass are becoming much more available within the aquarium hobby as their size, pattern, coloration and aggressive feeding habits have made them very popular with aquarium hobbyists interested in keeping larger New World Cichlid species.When keeping Temensis Peacock Bass in an aquarium environment, it is important to account for their very large size and aggressive feeding habits and nature. Temensis Peacock Bass come from river ways that have a constant flow of fresh water working from the mountains down to the sea. Peacock Bass have become accustomed to an environment with high quality water with low levels of pollutants and high levels of oxygen. Temensis Peacock Bass aquariums need to replicate this environment through strong mechanical, chemical and biological filtration along with medium to strong water movement. Peacock Bass are large fish that eat equally large meals, thus excellent filtration is required to remove the excess food and waste products produced from such a large species. The adult size of the Temensis Peacock Bass is also an important factor in choosing the right aquarium to house them, with the size and shape of the aquarium being very important. With adults sizes of around 3 feet in length, it is important to provide an aquarium that is long enough and wide enough from front to back to allow the Peacock Bass to swim and turn around comfortably. An aquarium of at least 8 feet in length and 4 feet from front to back should be considered as minimum aquarium size for an adult specimen, while smaller specimens can be raised in smaller aquariums if they are moved to larger tanks as they grow. The aquarium decor should be designed to provide plenty of swimming room, while also providing some areas of cover using driftwood, floating or well rooted plants and rocks with a sandy or gravel substrate.