![]() Symphysodon discus (Red discus, also known as Heckel discus).Symphysodon aequifasciatus (Blue or brown discus).While other subspecies have been proposed and several variants have been achieved by selective breeding in captivity, only three major natural types are recognized, based on their coloring and genetic makeup. There are three different types of scientifically recognized discus fish. You can help your discus reach a large size by provided frequent water changes during critical growth periods. The maximum size ever recorded for a wild discus is around six inches, but aquarium hobbyists report that these fish can grow as long as nine inches by providing optimal conditions. Interestingly, discus fish tend to grow fastest in smaller tanks. ![]() After this time, their growth will level off, with larger fish becoming so huge only in the later years of their lives. They grow rapidly for the first few months, gaining up to an inch per month for the first three months. How fast/slow should you expect them to grow?ĭiscus fish can live for ten years or more. Although they aren’t terribly long, you need to remember that discus fish tend to be as tall as they are long, giving them a blockier appearance and causing them to take up more room in your tank. What size are discus when they’re small?ĭiscus fish start off very tiny, about one or two inches in length. These include the Albino White Snake, the Leopard Skin, the Super Red turquoise, and the Super Red Melon, just to name a few. While there are really only three different genetic types of discus fish, there are dozens of colors and patterns available. Females may have coloring that is more pronounced in some cases, but this is usually not noticeable. However, males tend to grow to a larger size than do females. There is no sexual dimorphism for this fish – meaning males and females look practically identical. They normally reach up to six inches in length, but healthy, unthreatened fish living in captivity can grown even larger. ![]() The fish has bright patterns of green, blue, red, and brown, with other variants existing as the result of selective breeding in aquariums. Discus fish have a body shape that seems flattened, with a rounded overall shape similar to that of a discus.
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