What is Discus Fish?
Discus fish (scientific name: Symphysodon) is a cichlid native to the Amazon Basin in South America. It’s a freshwater species with a unique shape: round and flat.
There are hundreds of variations of Discus being tank-bred today. According to the World Discus Association, the following domestic categories are defined for Discus based on their genome: Blue, Red Discus, Fine Spotted, Course Spotted, Pattern Brown, Pattern Yellow, Albino, and Unclassifiable.
One of those species is the  Red Melon which has a unique pattern that looks attractive.
Fish details:
Product Name:  Red Melon 
Fish Size: 7-8cm
 
To keep this Red Melon , several things must be considered:
Tank size:
Discus can be housed in smaller tanks, however you should aim to allow 40L per Discus into adulthood.
Ideal water conditions:
Young Juvenile Discus: 26–28°C
Adult Discus: 30–32°C
pH range: 6.5–7.8