Telescope Goldfish
Carassius auratus var. telescope
The dramatically bug-eyed fancy goldfish that trades agility for personality.

About
The telescope goldfish (Carassius auratus var. telescope) is one of the most recognizable fancy goldfish varieties, instantly identified by its protruding, globe-like eyes that extend noticeably outward from the head. This trait, developed through centuries of selective breeding in East Asia, gives the fish its distinctive appearance but also comes with a real tradeoff. Those prominent eyes are vulnerable to injury and offer significantly reduced vision compared to other goldfish. Because of this, telescope goldfish are slower and less competitive at feeding than slim-bodied or even other fancy varieties, so tankmates need to be chosen carefully. Mixing them with faster fish almost always results in the telescopes going hungry. They do well with other visually impaired or similarly unhurried fancy varieties like bubble-eyes or celestials. Despite the extra care they require, telescopes are genuinely personable fish that learn to recognize their keepers and interact at the glass. They come in a wide range of colors and scale types, with the black variety, often called the black moor, being especially popular. Their aquarium should be kept free of sharp decorations and objects with rough edges, which can easily damage those delicate eyes. A rewarding fish for a keeper willing to meet their specific needs.
Similar species
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Good tank mates
Species that tend to coexist peacefully with Telescope Goldfish
Frequently asked questions
- How big does the Telescope Goldfish get?
- The Telescope Goldfish reaches about 3–8" as an adult.
- What size tank does the Telescope Goldfish need?
- A minimum of 30 gallons is recommended for the Telescope Goldfish.
- What water parameters does the Telescope Goldfish need?
- The Telescope Goldfish does best with a temperature of 60–72°F, a pH of 6.5–8.5, hardness around 4–25 dGH.
- Is the Telescope Goldfish aggressive?
- The Telescope Goldfish is generally peaceful and suits a community tank with similarly calm tankmates.
- What does the Telescope Goldfish eat?
- The Telescope Goldfish is an omnivore. It does well on a varied diet of quality flake or pellet plus occasional frozen or live foods.
- How long does the Telescope Goldfish live?
- With good care, the Telescope Goldfish typically lives 10-20 years.