Oryzias melastigma is a valid scientific name.

Oryzias melastigma (McClelland, 1839)

Ricefish - Bechi - Native Fish - Wild (Freshwater)

Systematic Position:

Data not available

Common Names:

English	:	Ricefish[729]
Bangla	:	Bechi[5] Kanpona[5] Fedoli[729] Pata dandani[729] Pata beli[729]

Synonyms:

Aplocheilus melastigmus McClelland, 1839
Haplochilus melastigma (McClelland, 1839)
Oryzias melastigmus (McClelland, 1839)
Panchax melastigma (McClelland, 1839)
Haplochilus melanostigma (McClelland, 1839)
Oryzias melanostigma (McClelland, 1839)
Panchax cyanopthalma Blyth, 1858b
Panchax cyanophthalmus Blyth, 1858b
Panchax argenteus Day, 1868 Apr

Maximum Length and Weight:

3.75 cm (TL) ^[347] >900 mm (TL) ^[5]

Inter-Length Relationship:

Head length : Total length : Standard length = 1 : 4.4-4.7 : 3.5-3.8 ^[5]
Body height : Total length : Standard length = 1 : 4.2-4.4 : 3.3-3.5 ^[5]
Eye Diameter : Head length = 1 : 3 ^[5]
Snout length : Eye diameter = 1 : 1 ^[5]
Eye Diameter : Snout length = 1 : 1 ^[5]
Eye Diameter : Inter orbial width = 1 : 1 ^[5]
Inter orbial width : Eye Diameter = 1 : 1 ^[5]

Taxonomic Formula:

D. 7; P₁. 11(1/10); P₂. 6; A. 23-24 ^{[Rahman, 2005]}
D 6-7; A 20-24; P 15; V 6 ^{[Talwar and Jhingran, 1991]}
B IV; D 6-7; A 20-24; P 15; V 6; C 15; L.ls 27; L.tr 9-11 ^{[Shafi and Quddus, 1982]}

Scales:

Cycloid. Large. 27 scales on lateral line. [5]

Chemistry:

Data not available

Conservation Status:

Global	:	Least Concern (LC)	(Version 3.1) [699]
Bangladesh	:	Least Concern (LC)	(Version 3.1) [420]

Occurrence/Distribution:

Global	:	Andaman Island[746] India[37] Sri Lanka[37] Bangladesh[37]
Bangladesh	:	Gollamari canal, Khulna[5] Sunamganj haor region, Sunamganj[729] Passur River, Khulna[752] Punarbhaba, Dinajpur[1161] Feni river, Feni[1165] Muhuri river, Feni[1165]

Habitat and Environment:

Habitat:
River, Canal, Beel, Jeel, Haor ^[347]

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