The Santa Claus Swordtail (Xiphophorus hellerii), often called the Koi Swordtail, is a rare, selectively bred freshwater fish known for its striking red/orange head, white-to-silver body, and koi-like markings. As hardy livebearers, they are ideal for community tanks, growing to 2.5–3 inches and living for 3–5 years.
