Welcome to the site fishhobbyist.net, on this occasion I will discuss how to keep Nandopsis tetracanthus fish in an aquarium. Nandopsis tetracanthus fish is a type of freshwater fish that lives in waters with moderate lighting conditions. This fish can be used as a pet fish in a freshwater fish aquarium in your home. Before keeping Nandopsis tetracanthus fish in an aquarium, we should know the condition of the water quality that will be used to keep this fish. The water quality in the rearing tank that will be used must be of good water condition. Some of the water quality parameters that need to be considered include: 1.pH Nandopsis tetracanthus fish can live and grow well in maintenance aquariums with good water pH conditions. The pH value of the water in the aquarium is 7.2. 2. Water hardness level The aquarium water used to raise Nandopsis tetracanthus fish has a water hardness level of 12. 3. Water temperature Nandopsis tetracanthus fish can grow optimally at a water temperature o...