The rose danio (''Danio roseus'') is a

tropical The tropics are the regions of Earth surrounding the Equator. They are defined in latitude by the Tropic of Cancer in the Northern Hemisphere at N and the Tropic of Capricorn in the Southern Hemisphere at S. The tropics are also referred to ...

fish Fish are aquatic, craniate, gill-bearing animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups. Approximately 95% of li ...

of the family

Cyprinidae Cyprinidae is a family of freshwater fish commonly called the carp or minnow family. It includes the carps, the true minnows, and relatives like the barbs and barbels. Cyprinidae is the largest and most diverse fish family and the largest verte ...

. At first glance, this species resembles the

pearl danio The pearl danio (''Danio albolineatus'') is a tropical fish belonging to the minnow family Cyprinidae. Originating in Sumatra, Myanmar, and Thailand, this fish is sometimes found in aquariums by fish-keeping hobbyists. It grows to a maximum len ...

, but lacks the orange stripe on the side. It has a rosy colouration along the lower part of the fish and lower fins and gleams purple-blue in sunlight. It is also commonly known as the purple passion danio. Its natural range includes the Mekong River drainage in

China China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's most populous country, with a population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and ...

Thailand Thailand ( ), historically known as Siam () and officially the Kingdom of Thailand, is a country in Southeast Asia, located at the centre of the Indochinese Peninsula, spanning , with a population of almost 70 million. The country is bo ...

Laos Laos (, ''Lāo'' )), officially the Lao People's Democratic Republic ( Lao: ສາທາລະນະລັດ ປະຊາທິປະໄຕ ປະຊາຊົນລາວ, French: République démocratique populaire lao), is a socialist ...

, and

Myanmar Myanmar, ; UK pronunciations: US pronunciations incl. . Note: Wikipedia's IPA conventions require indicating /r/ even in British English although only some British English speakers pronounce r at the end of syllables. As John C. Wells, Joh ...

. * Maximum length: 1.25 inches 3.175 cm * Colors: Blue, purple, silver, red * Temperature preference 20-25 °C * pH preference: 6 to 7 * Hardness preference: Soft to medium * Salinity preference: Low to medium * Compatibility: Peaceful but fast, like most danios; needs plenty of space to swim; a good "dither" fish (draws timid fish out of hiding) * Lifespan: Typically two to three years * Ease of keeping: Moderate * Ease of breeding: Moderate to easy

References

* {{Taxonbar, from=Q1347654 Fish of Thailand Danio Fish described in 2000