Source: Wikimedia Commons
Telescope Eye Goldfish
IntermediateCarassius auratus var.
Defined by large protruding eyes. Black Moor is the most popular variant. Poor eyesight requires smooth decor without sharp edges. Slow-moving and charming.
Difficulty
Intermediate
Temperature
15〜26℃（適温20〜24℃）
Lifespan
10-15 years
Size
12-18cm
Diet
Goldfish pellets, bloodworms
About
The Telescope Eye goldfish, developed in early 18th-century China where the trait was called "dragon eyes," is instantly recognizable by its dramatically protruding eyes. The Black Moor is the most widely known variant, familiar to many Japanese people from traditional goldfish-scooping festivals. The eyes, while visually striking, impair the fish's vision significantly, requiring a tank free of sharp decorations and rough substrates that could cause injury. Their round body shape and flowing tail fins make them graceful swimmers, though notably slow-moving. Telescope Eyes are gentle in temperament and thrive best when kept with similarly slow varieties. Regular water changes and stable water quality around pH 7.0 are essential; black-colored individuals may fade if water quality deteriorates.
Basic Info
Origin
China
Lifespan
10-15 years
Size
12-18cm
Temperature
15〜26℃（適温20〜24℃）
Diet
Goldfish pellets, bloodworms
Care Guide
Container
45cm+. Avoid sharp decor that could injure protruding eyes
Water
Around pH 7.0. Maintain clean water
Care Specifications
- pH
- 6–8
- Hardness (GH)
- 5–19 dGH
- Water Temp.
- 18–23℃
PeacefulGroupBreeding: Moderate
Sources: FishBase / Aqueon Goldfish Care Guide
Morphs (Varieties)
金魚品種は体型・尾型・鱗・色の選抜固定(line-bred)。出目・透明鱗(キャリコ)・白子等は単一座。
RecessiveVisual only with two copies; one copy = het (carrier).
Protruding (telescope) eyes
Line-bredEstablished by selective line breeding.
Deep body / dorsal humpFantail (paired caudal)
Sources: Wikipedia - Goldfish (Varieties) / 金魚 - Wikipedia (日本語版・品種)
A curated selection of notable morphs. Inheritance modes are a breeding-planning guide; actual appearance varies with combos.
References & Sources
Edited & verified by: br-choku editorial team
The taxonomic, regulatory, and husbandry data on this page are compiled and verified against the authoritative primary sources below.
Taxonomy & Authority
Accepted name: Carassius auratus var. (Linnaeus, 1758)
Synonyms: Cyprinus auratus Linnaeus, 1758, Carassius auratus auratus (Linnaeus, 1758), Cyprinus thoracatus Valenciennes, 1842, Carassius burgeri Temminck & Schlegel, 1846, Cyprinus chinensis Gronow, 1854
Authority databases: FishBase · GBIF · FishBase: Carassius auratus · GBIF: Carassius auratus
Nomenclature follows global taxonomic authority databases.
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