Telescope goldfish live in slow-moving and stagnant water in the wild. Inspecting the fish regularly for physical changes will help identify disease and infection early on. Telescope goldfish are prone to common aquarium diseases, but problems are easy to prevent with regular water changes and good hygiene. Sick fish will change color or develop lumps, holes, or rashes that are uncommon for the species. Poor health and sexual maturity can cause the fish’s appearance to change. Females can grow up to eight inches long. Male telescope goldfish have thin bodies and a narrow concave vent, making them more streamlined than females. Female telescope goldfish have round bodies and look stocky next to male fish. Male fish are smaller than their female counterparts and grow up to five inches long. The telescope goldfish also has a long tail that fans out and flows in the water. The telescope goldfish has two distinct features that set it apart from the household goldfish and fancy goldfish. The first striking feature is the fish’s big eyes that look like two telescopes attached to its head. These fish will have blotches of color dotted around their body rather than displaying a uniform pattern. Immature fish are dark brown or black in color and only lighten and display patterns as they mature. Telescope goldfish come in a variety of patterns and are either orange, red, black, white, brown, or a combination of colors.

Size of telescope goldfish