The Black Ranchu Goldfish is a highly prized fancy goldfish variety known for its deep, velvety black coloration and distinctive rounded body shape. Often referred to as the “king of goldfish” in Japan, the Ranchu is celebrated for its elegant appearance, smooth back, and prominent head growth, called a “wen,” which gives it a unique and regal look.

Unlike other fancy goldfish, the Black Ranchu has no dorsal fin, giving it a smooth, curved back that accentuates its egg-shaped body. Its flowing fins and rounded tail add to its graceful swimming style, though Ranchus are slower swimmers compared to standard goldfish. The black coloration can vary from deep charcoal to solid jet black, making each fish visually striking and a standout addition to any aquarium.

These goldfish are peaceful and do best in groups with other Ranchus or similarly tempered fancy goldfish varieties. Due to their delicate eyes and body structure, they should not be housed with fast or aggressive tank mates that may outcompete them for food.

Black Ranchus prefer cooler water and require a spacious aquarium with gentle filtration to keep the water clean without creating strong currents. Smooth decorations and soft substrate help prevent damage to their delicate fins and wen. Regular partial water changes are essential to maintain their health and vibrant coloration.

Feeding Black Ranchu Goldfish is straightforward. They are omnivorous and thrive on high-quality pellets or flakes designed for fancy goldfish, supplemented with fresh vegetables like peas or spinach and occasional protein-rich treats such as bloodworms or brine shrimp.

Basic Care Guidelines:

* Tank size: Minimum 25 gallons for one, larger for groups
* Temperature: 65°F – 75°F
* pH: 6.5 – 7.5
* Temperament: Peaceful, best with other fancy goldfish
* Diet: Omnivorous – pellets, flakes, vegetables, and protein-rich foods

The Black Ranchu Goldfish is a beautiful and elegant species that combines striking coloration with a gentle personality. Their unique body shape, flowing fins, and sophisticated black hue make them a prized addition for goldfish enthusiasts and collectors looking for a true showpiece in their aquarium.