DEMEKIN GOLDFISH (Carassius Auratus) 2.5"

The Demekin goldfish (commonly known as the Telescope eye goldfish) is a heavily prized variety of fancy goldfish defined by its strikingly large, protruding bulbous eyes and deep, round body shape. Though "Demekin" (出目金) is its Japanese name, the breed originally originated in China in the early 1700s, where it was traditionally called the "dragon eye" Physically, a high-quality Demekin resembles a cross between a robust Ryukin goldfish and a telescope eye, featuring a distinct, prominent hump right behind its head, a short compact body, and long flowing fins. Quick Facts & Traits Size: Typically grows between 4 to 7+ inches (10 to 18 cm) in length. Lifespan: Can live anywhere from 6 to 25 years with proper care. Color Variations: They come in an array of scale types and patterns, including solid red, orange, white, velvety "Black Moor" (a hardy black sub-variety), multi-colored Calico, and rare Kirin scales. Vision: Despite their massive, telescopes-like eyes, they actually have incredibly poor vision. Their eyes also remain highly vulnerable to injury from sharp aquarium decorations. [1, 2, 3] Core Care Guide Care Aspect Requirement Why It Matters Tank Size 40 gallons (151 L) minimum for the first fish. Goldfish produce a massive amount of waste (bioload). High volume dilutes toxic ammonia. Diet High-protein sinking pellets. Floating food causes them to gulp air, which triggers swim bladder issues due to their compacted body shape. Tank Setup Bare bottom or smooth gravel, with zero sharp edges. Their protruding eyes can easily scratch, pop, or develop dangerous bacterial infections if dragged against jagged decor. Tankmates Only other slow-moving, fancy varieties (e.g., Celestial Eyes, Bubble Eyes, or other Telescopes). Fast, streamlined fish (like Commons or Comets) will outswim them and steal all the food, leaving the Demekin to starve.