Guides for Betta Fish Care | Japanese Fighting Fish Blog

If your betta has a "Japanese" name, why did you choose it? Is it because bettas are sometimes called Japanese fighting fish? Or because of anime? Or because you are learning Japanese? Or...some other reason?

Betta fish, Siamese fighting fish, Japanese fighting fish. Articles on Betta care at

Betta fish have the nickname of Siamese or Japanese fighting fish because they’re extremely aggressive and tend not to do well together. Never put two male bettas in the same tank together or you run a very high risk of one killing the other. In larger tanks, it’s possible to keep more than one female betta together, but even female bettas have been known to attack each other.

Betta fish, Siamese fighting fish, Japanese fighting fish

Yellow Pearl Butterfly Over-Half-Moon Japanese Fighting Fish - male betta. Japanese fighting fish, also called Siamese fighting fish or betta fish, are beautiful freshwater fish that make great additions to freshwater aquariums. These air-breathing fish are quite hardy but still have some basic housing, water and food requirements that must be met to ensure they lead long and happy lives.

Japanese Fighting Fish Archives - Betta Fish Care

Due to selective breeding there has been some evolution to the betta fish, no longer a dull green / brown, betta fish are now known for their bright colors and big flowing fins – like that of the halfmoon betta (see some Japanese fighting fish pictures below). Sadly these fish were also bred to fight. Similar to cock fights, betta fish were bred so that gambling could be done over the victor of a betta fight. This has led to an increase in aggression and fight length for domesticated betta fish, meaning it is important to and to never put two male bettas together.

Green Japanese Fighting Fish - Betta Fish


Welcome to our extensive Betta fish care learning center! We are happy to provide you with all of the information you need to know to care for your beautiful Japanese fighting fish.The brilliantly colored Japanese fighting fish (Betta splendens), also known as the betta fish or Siamese fighting fish, is known and named for aggressive behavior. Native to Thailand, Malaysia, Indonesia, Vietnam and China, the Japanese fighting fish was bred in captivity originally for to produce specimens suitable for organized fights between males, similar to cock-fighting. Today, the Japanese fighting fish is one of the most popular fish to own after goldfish, thanks to his stunning beauty, dramatic long, flowing fins and ease of care. Today, Betta Splendens are the most popular fish with breeders in the United States and Japan. Commercial Betta farms in Malaysia and Singapore breed both display Splendens and fighting Splendens, with the breeding of the fighters producing the most revenue. Fighters are often discarded following their matches and new ones are bought, whereas, display Splendens live up to four years.The male Japanese fighting fish is particularly territorial and will fight another in the same aquarium. However, you can keep several females together with a single male typically without any problems. Male betta fish become aggressive toward other fish that resemble them in appearance, mistaking them for betta rivals intent on taking his territory. To ensure peaceful cohabitation in the aquarium, avoid keeping male Japanese fighting fish with other species that have similar body shapes, long fins or large amount of red or blue coloring.