This week’s Fish of the Week is the Ranchu Goldfish.
Said to resemble a sumo wrestler, the Ranchu is highly regarded in Japan. This popular fancy coldwater fish has many distinctive features including an egg-shaped body with a deep belly, short twin tail, bulbous hooded head and no dorsal fin. Ranchu’s are available in a variety of different colours such as red, white and tri coloured.
The Ranchu is a little more delicate than most species of goldfish and is therefore not recommended for beginners. Given that these fish can grow up to 12cm in length, a minimum tank size of 100 litres is recommended with a temperature between 18 °C and 22 °C and a pH of 6.0 and 8.0 being ideal. Ranchu fancy goldfish are not recommended for planted aquariums as they will eat or uproot aquatic plants during their constant search for food.
Being an omnivore the Ranchu goldfish will generally eat all kinds of fresh, frozen, and flake foods.
Like most goldfish Ranchu’s will produce a large amount of waste so weekly water changes are essential.