Origins and Classification
- Scientific Name: Poecilia reticulata (Tuxedo Koi strain)
- Family: Poeciliidae (Livebearers)
- Origin: Native to South America (Trinidad, Venezuela, Guyana, Brazil); Tuxedo Koi is a selectively bred guppy strain created by aquarists.
- Popularity: Popular among hobbyists for its striking koi-like head colors combined with the dark “tuxedo” pattern on the body and tail.
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🎨 Appearance
- Body Color:
- Bright red/orange koi markings on the head.
- Contrasting dark black/blue “tuxedo” shading on the rear half of the body.
- Tail often shows a mix of red, orange, and black.
- Distinctive Features:
- Males: small, vividly colored, with flowing tails (delta/fan-shaped).
- Females: larger with lighter coloration but still show koi head markings.
- Size: Small — males 1.2–1.5 inches (3–4 cm); females 2–2.5 inches (5–6 cm).
- Lifespan: 2–3 years with proper care.
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🏡 Tank Requirements
- Tank Size: Minimum 10 gallons (best in groups; 1 male with 2–3 females recommended).
- Water Parameters:
- Temperature: 72–82°F (22–28°C)
- pH: 6.8–7.8
- Water Hardness: Moderately hard preferred.
- Habitat Setup:
- Provide live plants (good for hiding fry).
- Ensure swimming space with gentle water flow.
- Peaceful community tank mates recommended.
- Avoid fin-nippers to protect their flowing tails.



