Leuciscus microcephalus is a Misapplied Synonym of Rasbora rasbora and also a Valid Name or Synonym of another species as well.

Rasbora rasbora (Hamilton, 1822)

- Darkina - Native Fish - Wild (Freshwater)

Systematic Position: [2]

Kingdom	:	Animalia
Phylum	:	Chordata
Class	:	Teleostei
Order	:	Cypriniformes
Family	:	Cyprinidae
Genus	:	Rasbora
Species	:	Rasbora rasbora

Common Names:

English	:	Data not available
Bangla	:	Darkina[5]

Synonyms:

Cyprinus rasbora Hamilton, 1822
Leuciscus rasbora (Hamilton, 1822)
Leuciscus presbyter Valenciennes, 1844 Jul
Leuciscus presbiter Valenciennes, 1844 Jul
Rasbora buchanani Bleeker, 1860 Aug
Leuciscus microcephalus (Non Jerdon, 1849)

Maximum Length and Weight:

82 mm (TL) ^[5]

Inter-Length Relationship:

Head length : Total length : Standard length = 1 : 5-5.6 : 3.7-4 ^[5]
Body height : Total length : Standard length = 1 : 4.6-4.7 : 3.5-3.6 ^[5]
Eye Diameter : Head length = 1 : 3.3-3.5 ^[5]
Snout length : Eye diameter = 1 : 1 ^[5]
Eye Diameter : Snout length = 1 : 1 ^[5]
Eye Diameter : Inter orbial width = 1 : 1.3 ^[5]

Taxonomic Formula:

D. 9(2/7); P₁. 15; P₂. 9; A. 7(2/5) ^{[Rahman, 2005]}
D ii 7; A ii-iii 5; P i 14; V i 8 ^{[Talwar and Jhingran, 1991]}

Scales:

27-29 scales on lateral line. 12 scales before dorsal fin base. 1.5-2.0 scales between origin of pelvic fin and lateral line. [5]

26-29 scales on lateral line. 4.5-/1/2 scales on transverse series. [6]

Chemistry:

Data not available

Conservation Status:

Global	:	Least Concern (LC)	(Version 3.1) [556]
Bangladesh	:	Near Threatened (NT)	(Version 3.1) [255]

Occurrence/Distribution:

Global	:	Bangladesh[70] Bangladesh[70] India[6] Myanmar[832] Pakistan[741] Thailand[670]
Bangladesh	:	Padma river, Rajshahi[274] Halda River, Chittagong Hill Tracts[598] Passur River, Khulna[752] Mahananda River, Chapainawabganj[775] Someshwari river, Netrokona[806] Sangu river, Chattogram[811] Tanguar Haor, Sunamganj[1025] Ghaghat river, Gaibandha[1202]

Habitat and Environment:

Habitat: Data not available

Environment:

Parameters	Units	Minimum	Maximum	Optimum	Ref.
Temperature	-	-	-	-	-
pH	-	-	-	-	-
DO	-	-	-	-	-
Free CO2	-	-	-	-	-

Breeding Maturity:

Data not available

Breeding Season: (red background)

Data not available

Fecundity:

Data not available

Food and Feeding Habit:

Diet composition (%): Data not available

Importance:

Production and Marketing:
Production/Harvesting Season: Data not available
Harvesting Gears: Data not available
Market price: Data not available