Betta dimidiata
Roberts 1989

Keeping Betta dimidiata from an Aquarist View


Betta dimidiata can be housed in pairs, species tanks, and community tanks.  Pairs can be housed in a 10 gallon tank, groups should be housed in a 20 gallon tank or larger.  Pairs should be given cover such as caves and plants.  In a pair or species situation it is possible that fry could be discovered in the tanks.  For best results remove a brooding male.

Water Conditions

Not critical, dimidiata is very tolerant of water chemistry and thrives in almost any type of water as long as it is clean and well filtered.  They should be kept at cool to mid 70s F.


Dimidiata males are more intensely colored then females.  Males may also show a brilliant band in the anal and tail fins.  Females ovaries might be visible via spotlighting.


Dimidiata is a paternal mouthbrooder and the male incubates from 7 to 12 days with 9 days being very consistent.  Incubation time can vary with water temperature.  Females normally initiate spawning.

Similar Species Similar species would be Krataios.
Identification Krataios has a rounded caudal fin where as dimidiata has a tail extension.

Professionally prepared article(s) on Betta dimidiata

Currently none available


Betta dimidiata by Holly Rutan 2017 

Scientific Paper on Species

Roberts 1989

Location Map   

Original Citation Roberts, T. R. 1989. [87]

Anon., 1999.  [154] Anon., 2001. [155] Hureau, J.-C., 1991.  [159] Kottelat, M., A.J. Whitten, S.N. Kartikasari and S. Wirjoatmodjo, 1993. [58]

Type Locality Kapuas basin, Sungai Seriang, 37 km west of Putussibau, Indonesia
Holotype MZB 3849
Paratypes BMNH 1982.3.29.230-235
CAS 49469-72 (9, 3, 2, 6)
FMNH 94251 (6)
MNHN 1982-0718
MZB 3850-58 (3, 2, 1, 7, 1, 1, 1, 1, 1);
RMNH 28917 (2);
UMMZ 209927 (5);
USNM 00230336
USNM 00230337
Countries Indonesia
Preserved Specimens USNM 00230337:  Indonesia: Borneo: Sungai Gentu.  [155] USNM 00230336:  Indonesia: Borneo: Sungai Tekam.   [155] MNHN 1982-0718:  Indonesia: Kalimantan: Sintang.  [159] BMNH 1982.3.29.230-235:  Indonesia: Kapuas, Borneo.  [154] Indonesia.
Indonesia: Sungai Mandai Ketchil.
Indonesia: Sungai Seriang.
Miscellaneous Information Max Size: 4.6 cm TL
Locality: Kapuas river basin, Sanggau area – Hulu area. [6]
General notes on water chemistry: pH 5.2-6.5/GH0-1/KH0-1/TDS20/ lightbrown water. [6]
Water temp: 27°C [6]


(literally) cut in half: in reference to the slender built of the species
General notes: Betta enisae and Betta dimidiata live widely from Sanggau area to the upper reaches part. These two kinds sometimes inhabit the same place. [6]