Ranchu

Picture of a Goldfish

Description of the Ranchu

The Ranchu is known as the 'Buffalo Head'. It can be recognised by its lack of dorsal fin, egg shaped body and a large growth on its head which is thought to resemble a bunch of grapes! It is not recommended for beginners as it is not as hardy as other varieties of fancy goldfish. The Japanese refer to the Ranchu as 'The King of Goldfish' and it can be found in a variety of colors including Red, Orange, White, Chocolate, Black, Red and Black, Red and White and occasionally Yellow.

Facts - Information - Picture

Popular Name: Ranchu
Species:
Carassius auratus auratus

Picture of a Goldfish

Ranchu

Profile of the Ranchu
This Profile contains interesting facts and information about the Ranchu species.

  • Size: Up to 20cm

  • Fish Tank conditions: Coldwater Pond or Tank

  • Diet / Feeding: Commercial Dried Fish Food Flakes

  • Temperament: Good Community Fish

  • Behaviour: Slow Swimmer

Scientific Classification of the Ranchu
Definition: Scientific classification, or biological classification, is how biologists group and categorize species of organisms with shared physical characteristics. Scientific classification belongs to the science of taxonomy.

  • Species: Carassius auratus auratus

  • Popular Name: Ranchu

  • Kingdom: Animalia

  • Phylum: Chordata

  • Class: Actinopterygii

  • Order: Cypriniformes

  • Family: Cyprinidae

Interesting Facts and Information - How do you identify the sex of a Ranchu?
The males and females of many fish species have different colors or different shaped bodies. But there are also other fish species where there is no visible difference. Its sometimes tricky being an ichthyologist!

Interesting Facts and Information - Why are Ranchu slimy?
Ranchu secrete a type of mucus, or slime, from their skin. This slime provides protection against parasites and infections and helps the Ranchu to move through the water faster. Some fish species also release toxins in their slime which ward off enemy attacks. Other fish species use their slime to feed their young.

Interesting Facts and Information - Why do Ranchu have gills?
Gills enable the Ranchu to breathe. Gills consist of thin sheets of tissue containing blood vessels. As water passes over the gills oxygen is absorbed into the blood stream Carbon dioxide passes out into the water. The gills are protected by a large bony plate called an operculum. Some fish species however have lungs and breathe air.

Interesting Facts and Information - Why do the Ranchu have fins?
A fin is an external appendage or "limb" of a fish. Fins are used for directing, stabilizing, or propelling the different fish species in water. Numbers of fins vary between fish species, but there are usually seven. Each of the fins on a fish are designed to perform a specific function:

  • Dorsal fins - The dorsal fin is located on the backs of fishes. The Ranchu has Dorsal fins to lend stability in swimming.

  • Ventral fins. The ventral fin is located on the pelvic area of fishes. The Ranchu has Ventral fins to lend stability in swimming.

  • Caudal fins. The Caudal fin is located on the tail area of fishes. The Ranchu has Caudal fins to propel through the water.

  • Pectoral fins. The Pectoral fin is located on the breast area of fishes. The Ranchu has Pectoral fins to for locomotion and side to side movement

Interesting Facts and Information about Ranchu

Ranchu

  • Interesting Information about Ranchu

  • Facts about Fish Species - Why are Ranchu slimy?

  • Why do the Ranchu have gills?

  • Facts about Fish Species - Why do the Ranchu have fins?

  • Species: Carassius auratus auratus

Fish Species

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