Overview

Comprehensive Description

Biology

Lives in hill streams (Ref. 4832). Found in running waters of lower Mekong (Ref. 36667). Occurs at the surface of small, clear streams (Ref. 12693). Feeds on exogenous insects and some zooplankton (Ref. 12693). Not seen in fish markets, but popular in the aquarium trade (Ref. 12693). Aquarium keeping: in groups of 5 or more individuals; minimum aquarium size 60 cm (Ref. 51539).
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Distribution

Range Description

The species is known from the Tenasserim River, the Salween and the upper Chao Phraya basins in Myanmar, Thailand, and Yunnan (southern China). There are also records (as Danio pulcher) from the eastern slopes of the Gulf of Thailand drainages and from Pliew, Chantaburi, Chantabun Province, southeastern Thailand and into western Cambodia.
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Asia.
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Asia: Myanmar to Laos and the island of Sumatra, Indonesia (Ref. 7050). Reported from Irrawaddy, Salween, Mekong, Mae Khlong drainages (Ref. 37788). Records from Sri Lanka and India are incorrect (Ref. 4832).
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Physical Description

Morphology

Dorsal soft rays (total): 7; Analsoft rays: 12 - 13
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Size

Max. size

6.5 cm SL (male/unsexed; (Ref. 4832))
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Diagnostic Description

Incomplete lateral line, without infraorbital process; with 6-7 branched dorsal fin rays and 13-14 branched anal fin rays. Two pairs of long barbels. Rostral barbels reaching to or slightly anterior to vertical through the middle of the orbit; maxillary barbels exceed the origin of pectoral fin. Vertical scale rows 30-31, predorsal scale rows 16. Pharyngeal teeth in three rows, 5, 4, 2; 2, 4, 5 (Ref. 37787). Body pink with two light yellow-white (iridescent in life) stripes from below dorsal origin to caudal base (Ref. 43281).
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Type Information

Paratype for Danio tweediei
Catalog Number: USNM 163996
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Preparation: Radiograph
Collector(s): R. Neath
Year Collected: 1953
Locality: Malaya, Kedah, Sungei Patari, Kedah, Malaysia, Asia
  • Paratype:
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
Found in submontane streams to hillstreams with leaf litter and dense riparian vegetations, living in large schools.

Systems
  • Freshwater
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Environment

benthopelagic; freshwater; pH range: 6.0 - 8.0; dH range: 5 - 19
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Trophic Strategy

Lives in hill streams (Ref. 4832). Found in running waters of lower Mekong (Ref. 36667) and from a clearwater, open-canopy stream in Salween river drainage (Ref. 58912). Occurs at the surface of small, clear streams (Ref. 12693). Feeds on exogenous insects and some zooplankton (Ref. 12693). Insects comprised an average of 95% of gut volume (Ref. 58912).
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Diseases and Parasites

Bacterial Infections (general). Bacterial diseases
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Molecular Biology and Genetics

Molecular Biology

Barcode data: Danio albolineatus

The following is a representative barcode sequence, the centroid of all available sequences for this species.


No available public DNA sequences.

Download FASTA File
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Statistics of barcoding coverage: Danio albolineatus

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 5
Specimens with Barcodes: 5
Species With Barcodes: 1
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2012

Assessor/s
Vidthayanon, C.

Reviewer/s
Allen, D. & Smith, K.

Contributor/s

Justification
The species is a locally common fish with a wide distribution. Its populations have not declined, and it is assesses as Least Concern.
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Population

Population
Locally common in its suitable habitats.

Population Trend
Stable
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Threats

Least Concern (LC)
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Management

Conservation Actions

Conservation Actions
None required at present.
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Relevance to Humans and Ecosystems

Benefits

Importance

fisheries: minor commercial; aquarium: highly commercial
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Wikipedia

Pearl danio

The pearl danio (Danio albolineatus) is a tropical fish belonging to the minnow family (Cyprinidae). Originating in Sumatra, Burma, and Thailand, this fish is sometimes found in aquariums by fish-keeping hobbyists. It grows to a maximum length of 2.6 inches (6.5 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.

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 diets consist 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.

Subspecies[edit]

Two other danio names, blue-redstripe danio and Kedah danio, are currently deemed synonyms of the pearl danio.

See also[edit]

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