Polyacanthus lalius is a Senior Synonym of Trichogaster lalius.

Trichogaster lalius (Hamilton, 1822)

Dwarf Gourami - Lal Khalisha - Native Fish - Wild (Freshwater)

Systematic Position:

Data not available

Common Names:

English	:	Dwarf Gourami[729]
Bangla	:	Lal Khalisha[5] Chata[729] Ranga khalisha[729]

Synonyms:

Colisa lalius (Hamilton, 1822)
Colisa lalia (Hamilton, 1822)
Trichopodus lalius Hamilton, 1822
Polyacanthus lalius (Hamilton, 1822)
Colisha lalius (Hamilton, 1822)
Colisa unicolor Cuvier, 1831 Apr

Maximum Length and Weight:

Data not available

Inter-Length Relationship:

Head length : Total length : Standard length = 1 : 3.8-4 : 2.9-3 ^[5]
Body height : Total length : Standard length = 1 : 2.2-2.5 : 1.7-1.8 ^[5]
Eye Diameter : Head length = 1 : 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. XV-XVII/7-8; P₁. 8-9; P₂. 1; A. XVII-XX/14-16 ^{[Rahman, 2005]}
D XV-XVII 7-10; A XVII-XVIII 13-17; P 10 ^{[Talwar and Jhingran, 1991]}
D XV-XII/7-10; A XVII-XVIII/13-17; P 10; V 1; C 15; L.ls 26-28; L.tr 4.5-5/10 ^{[Shafi and Quddus, 1982]}

Scales:

5.5-6 scales between origin of dorsal fin and lateral line. [5]

27-28 scales on lateral line. [6]

Chemistry:

Data not available

Conservation Status:

Global	:	Least Concern (LC)	(Version 3.1) [631]
Bangladesh	:	Least Concern (LC)	(Version 3.1) [349]

Occurrence/Distribution:

Global	:	Bangladesh[70] India[37] Pakistan[741] Singapore[1115] Taiwan[1153] United States[1154] Colombia[877] Myanmar[597] Nepal[597]
Bangladesh	:	Padma river, Rajshahi[274] Kaptai reservoir (Kaptai lake), Rangamati[753] Mahananda River, Chapainawabganj[775] Tulsiganga River, Joypurhat[780] Meghna river, Narsingdi[781] Chitra river, Jashore[793] Buriganga River, Dhaka[798] Talma River, Panchagarh[800] Banar River, Mymensingh[1023] Tanguar Haor, Sunamganj[1025] Tanguar Haor, Sunamganj[1025] Punarbhaba, Dinajpur[1161] Ramnabad river, Patuakhali[1163] Feni river, Feni[1165] Muhuri river, Feni[1165] Shakla heel, Brahmanbaria[1167] Balla beel, Moulvibazar[1168] Titas river, Brahmanbaria[1169] Lohalia river, Patuakhali[1200] Ghaghat river, Gaibandha[1202]

Habitat and Environment:

Habitat:
Beel, Haor, Baor, Pond ^[347]

Environment:

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

Breeding Maturity:

Data not available

Breeding Season: (red background)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

[274]

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

[347]

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, Cast net, Gill net, Bamboo trap ^[792]
Market price:
150-200 BDT/kg (Size: 15-18 cm, Weight: 60-80 g, Place: Noakhali, Bangladesh) ^[792]