Pearl danio

Pearl danio
Conservation status
Least Concern  (IUCN 3.1) [1]
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Cypriniformes
Family:	Danionidae
Subfamily:	Danioninae
Genus:	Danio
Species:	D. albolineatus
Binomial name
Danio albolineatus (Blyth, 1860)
Synonyms
Brachydanio albolineatusBlyth, 1860 Danio albolineataBlyth, 1860 Danio stoliczaeDay, 1870 Nuria albolineataBlyth, 1860

The pearl danio (Danio albolineatus) is a tropical, freshwater ray-finned fish belonging to the family Danioinidae. ^[2] Originating in Sumatra, Myanmar, and Thailand and Vietnam (Phu Quoc Island), this fish is sometimes found in aquariums by fish-keeping hobbyists. It grows to a maximum length of 2.6 inches (6.6 cm) and lives for around five years. The fish could have a brownish-yellow, pink, or a silver body and two light yellow/white or blue/red stripes. It has an iridescent look. The female fish has two pairs of barbels. ^[3]

In the wild, the pearl danio is found in along the surface of small, clear rivers and hill streams. They live in a tropical climate with water with a 6.0 – 8.0 pH, a water hardness of up to 5 – 19 dGH, and a temperature range of 68–77 °F (20–25 °C). Their diet consists mostly of exogenous insects and zooplankton. The pearl danio is an egglayer. Golden varieties are often seen in shops; these are in reality semi-albino fish. ^[4] The blue-redstripe danio (D. pulcher) and the Kedah danio (D. tweediei) were considered synonymous with this species, but Eschmeyer's Catalog of Fishes recognises them as valid, distinct species. ^[5]

References

1. Vidthayanon, C. (2012). "Danio albolineatus". The IUCN Red List of Threatened Species . 2012. IUCN: e.T180844A1669179. doi: 10.2305/IUCN.UK.2012-1.RLTS.T180844A1669179.en . Retrieved 15 January 2018.
2. Kullander, S.O. (2015). "Taxonomy of chain Danio, an Indo-Myanmar species assemblage, with descriptions of four new species (Teleostei: Cyprinidae)" (PDF). Ichthyological Exploration of Freshwaters. 25 (4): 357–380.
3. Froese, Rainer; Pauly, Daniel (eds.). "Danio albolineatus". FishBase . April 2015 version.
4. Danio abolineatus
5. Fricke, Ron; Eschmeyer, William N. & van der Laan, Richard (eds.). "Species in the genus Danio". Catalog of Fishes . California Academy of Sciences.