Scientific Name: Carassius auratus The Red Ryukin Goldfish is a striking fancy goldfish known for its deep body, flowing fins, and distinctive shoulder hump behind the head. Its bright red coloration and elegant shape make it a popular choice for aquariums and ornamental ponds. Scientific Name: Carassius auratus Temperament: Peaceful Diet: High-quality goldfish pellets, flakes, vegetables, and frozen foods Minimum Tank Size: 30 gallons Temperature: 65–75°F (18–24°C) pH: 6.5–7.5 Adult Size: 6–8 inches Behavior: Red Ryukin Goldfish are active swimmers compared to many fancy goldfish varieties and do well with other peaceful fancy goldfish. They thrive in aquariums with strong filtration, open swimming space, and stable water conditions. Notes: Assortment includes a mix of colors and patterns; Exact colors and markings will vary; Stock photo used; fish received may differ.