Betta foerschi
Vierke 1979

Betta foerschi male
Photo by Kei Sasaki (Betta House) [5]

Keeping Betta mandor from an Aquarist View


Betta foerschi can be housed in pairs, species tanks, and community tanks.  Pairs can be housed in a 20 gallon tank, groups should be housed in a 30 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

Betta foerschi comes from blackwater environments and should have soft acidic water that is well filtered.  They should be kept at cool to mid 70s F.


Foerschi males are more intensely colored then females.  Males have red opercular bars where as females bars will be gold.  Females ovaries might be visible via spotlighting.


Foerschi is a paternal mouthbrooder and the male incubates from 12 to 17 days with 15 days being very consistent.  Incubation time can vary with water temperature.  Females normally initiate spawning.

Similar Species Similar species would be mandor, strohi and rubra.
Identification Foerschi and Mandor have red opercular bars, Strohi have gold bars.

Articles on Betta foerschi

Articles on related species

I’ve Got a New Mouthbrooding Betta – Now What? Michael Hellweg. 2003.

Working with wild Bettas Gerald Griffin.  Flare! 2006

Original Citation Vierke, J. 1979. [108]
References Baensch, H.A. and R. Riehl, 1985. [24] Kottelat, M., A.J. Whitten, S.N. Kartikasari and S. Wirjoatmodjo, 1993. [58] Baensch, H.A. and R. Riehl, 1995. [26] Schliewen, U., 1992. [94]
Type Locality Mentaya R. system, 250 km northwest of Bandjarmasin, Borneo, Indonesia.
Holotype ZMH 6058
Paratype ZMH 6059 (2)
Where Found Countries: Indonesia
Known Occurrences: Malaysia: Mentaya-Fluß-System, 250 km NW von Banjarmasin, Süd-Borneo
Miscellaneous Information Biotope: Betta foerschi was collected in a shallow pool in the swamp woods of Mandor. Betta foerschi inhabited the bottom of the pool in the fallen leaves. Betta foerschi was also collected in the even more southern Tumbantiti. [6]
Locality: Mandor, Kubu, Tumbantiti
Water quality: pH 4.8-5.5/GH0-1/KH0-1/ deep black water, clear water. (6)
Water temp: 26-27 [6]
Max Size: 7.0 cm TL
dH range: 0.0 – 4.0
pH range: 4.0 – 6.0
Depth range 0 m
Temperature range: 24 – 26°C
Reproduction: Mouthbrooder