Pearl Danio
Encyclopedia
The Pearl Danio is a tropical fish
Fish
Fish are a paraphyletic group of organisms that consist of all gill-bearing aquatic vertebrate 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...

 belonging to the minnow family (Cyprinidae). Originating in Sumatra
Sumatra
Sumatra is an island in western Indonesia, westernmost of the Sunda Islands. It is the largest island entirely in Indonesia , and the sixth largest island in the world at 473,481 km2 with a population of 50,365,538...

, Burma, and Thailand
Thailand
Thailand , officially the Kingdom of Thailand , formerly known as Siam , is a country located at the centre of the Indochina peninsula and Southeast Asia. It is bordered to the north by Burma and Laos, to the east by Laos and Cambodia, to the south by the Gulf of Thailand and Malaysia, and to the...

, this fish is sometimes found in community tanks by fish keeping hobbyists. It grows to a maximum length of 2.6 inches (6.5 cm) and lives for around 5 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 barbel
Barbel (anatomy)
A barbel on a fish is a slender, whiskerlike tactile organ near the mouth. Fish that have barbels include the catfish, the carp, the goatfish, sturgeon, the zebrafish and some species of shark...

s.

In the wild, the Pearl Danio is found in along the surface of small, clear rivers and hill streams. They natively live in a tropical climate and prefer water with a 6.0 - 8.0 pH
PH
In chemistry, pH is a measure of the acidity or basicity of an aqueous solution. Pure water is said to be neutral, with a pH close to 7.0 at . Solutions with a pH less than 7 are said to be acidic and solutions with a pH greater than 7 are basic or alkaline...

, a water hardness of up to 5 - 19 dGH
DGH
Degrees of general hardness is a unit of water hardness, specifically of general hardness.General hardness is a measure of the concentration of metal divalent ions such as calcium and magnesium per volume of water...

, and a temperature range of 68 - 77 °F
Fahrenheit
Fahrenheit is the temperature scale proposed in 1724 by, and named after, the German physicist Daniel Gabriel Fahrenheit . Within this scale, the freezing of water into ice is defined at 32 degrees, while the boiling point of water is defined to be 212 degrees...

 (20 - 25 °C
Celsius
Celsius is a scale and unit of measurement for temperature. It is named after the Swedish astronomer Anders Celsius , who developed a similar temperature scale two years before his death...

). Their diet consists mostly of exogenous
Exogenous
Exogenous refers to an action or object coming from outside a system. It is the opposite of endogenous, something generated from within the system....

 insect
Insect
Insects are a class of living creatures within the arthropods that have a chitinous exoskeleton, a three-part body , three pairs of jointed legs, compound eyes, and two antennae...

s and some zooplankton
Zooplankton
Zooplankton are heterotrophic plankton. Plankton are organisms drifting in oceans, seas, and bodies of fresh water. The word "zooplankton" is derived from the Greek zoon , meaning "animal", and , meaning "wanderer" or "drifter"...

, however, in a community tank
Aquarium
An aquarium is a vivarium consisting of at least one transparent side in which water-dwelling plants or animals are kept. Fishkeepers use aquaria to keep fish, invertebrates, amphibians, marine mammals, turtles, and aquatic plants...

, it is omnivorous
Omnivore
Omnivores are species that eat both plants and animals as their primary food source...

. It is a peaceful, schooling fish that gets along well with other fish. The Pearl Danio is an egglayer. Golden varieties are often seen in shops, these are in reality semi albino fish.

They can live happily in pairs, but ideally should be kept in shoals of 6 or more.

Synomyms

Two other danios, both formerly named are currently deemed synonyms of the Pearl Danio
  • Blue-Redstripe Danio
    Blue-Redstripe Danio
    The Blue-Redstripe Danio is a fish that may be color morph of the widely known Pearl Danio. It is a tropical fish belonging to the Danio family . Originating from South-east Asia in southern Thailand, Chantaburi province, this fish is rarely found in the fish keeping hobby...

  • Kedah Danio
    Kedah Danio
    The Kedah Danio is a color morph of the fish species pearl danio. It is a tropical fish belonging to the Danio family . Originating from South-east Asia in south Thailand, Kedah and Sumatra, this fish is rarely found in the fish keeping hobby, usually accidentally mixed with the pearl danio.The...

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