Batasio batasio is a valid scientific name.

Batasio batasio (Hamilton, 1822)

Tista batasio - Tengra - Native Fish - Wild (Freshwater)

Systematic Position: [2]

Kingdom	:	Animalia
Phylum	:	Chordata
Class	:	Teleostei
Order	:	Siluriformes
Family	:	Bagridae
Genus	:	Batasio
Species	:	Batasio batasio

Common Names:

English	:	Tista batasio [6]
Bangla	:	Tengra[5]

Synonyms:

Pimelodus batasio Hamilton, 1822
Gagata batasio (Hamilton, 1822)
Macrones batasio (Hamilton, 1822)

Maximum Length and Weight:

10 cm (TL) ^[6]

Inter-Length Relationship:

Head length : Total length : Standard length = 1 : 4.5-5 : 3.7-4 ^[5]
Body height : Total length : Standard length = 1 : 5.5-6 : 4.5-5 ^[5]
Eye Diameter : Head length = 1 : 3.8-4.2 ^[5]
Eye Diameter : Snout length = 1 : 1.6-1.8 ^[5]
Eye Diameter : Inter orbial width = 1 : .8-1 ^[5]

Taxonomic Formula:

D. 11/7; P₁. 1/7-8; P₂. 1/5; A. 3-4/9-10 ^{[Rahman, 2005]}
D I 7; A iii-iv 9-10; P I 5-8; V i 5 ^{[Talwar and Jhingran, 1991]}

Scales:

Scaleless. [5]

Chemistry:

Data not available

Conservation Status:

Global	:	Least Concern (LC)	(Version 3.1) [564]
Bangladesh	:	Near Threatened (NT)	(Version 3.1) [265]

Occurrence/Distribution:

Global	:	Bangladesh[70] Afghanistan[847] India[6] Myanmar[853] Nepal[134]
Bangladesh	:	Chalan beel, Natore[490] Little feni river, Feni[795] Someshwari river, Netrokona[806] Balla beel, Moulvibazar[1168]

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: (Green = Peak, Yellow = Off, Lemon = Moderate)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

[792]

Harvesting Gears:
Seine net, Push net, Cast net ^[792]
Market price:
200-250 BDT/kg (Size: 6-8 cm, Weight: 15-20 g, Place: Noakhali, Bangladesh) ^[792]