Photo by Kei Sasaki (Betta House) 
Keeping Betta picta from an Aquarist View
Betta simplex can be housed in pairs, species tanks, and community tanks. Pairs can be housed in a 2.5 gallon tank, groups should be housed in a 10 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.
Not critical, simplex 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.
Males have a broader head then females and a much darker stripe on the anal fin. Females may not have a stripe or faint stripe on the anal fin. Females ovaries might be visible via spotlighting.
Simplex is a paternal mouthbrooder and the male incubates from 9 to 12 days with 10 days being very consistent. Incubation time can vary with water temperature. Females normally initiate spawning.
|Similar Species||Similar species would be picta complex members picta, falx and taeniata.|
|Identification||Simplex males normally do not have a highly pronounced stripe in the caudal fin where as falx and simplex do.|
Articles on Betta simplex
Mouth Brooder Betta of Thailand. Nonn Panitvong Thailand; c. 2002
Articles on related species
Betta picta: Not Very Beautiful, But Interesting Nonetheless– Gerald Griffin, 1988 Republish from Flare Magazine
Betta picta (Sumatra) Yohan Fernando
Betta picta – Carolyn Hanlon, 2007
Care and Breeding of Betta falx Gerald Griffin 2003, Republish from Flare Magazine
I’ve Got a New Mouthbrooding Betta – Now What? Michael Hellweg. 2003.
Working with wild Bettas Gerald Griffin. Flare! 2006
|Original Citation||Kottelat, M. 1994. |
|References||Baensch, H.A. and R. Riehl, 1995.  Hilton-Taylor, C., 2000.  Panitvong, Nonn.  Pinto, Tony. 2002. |
|Type Locality||Spring (small lake) of Tham Sra Kaew and Nine Ponds, 2.2 km from National hwy 4034, nw. Krabi, Krabi Prov., Thailand.|
|Holotype||ZRC 38486 [ex CMK 10635]|
|Paratype||CMK 9445 (4)
ZRC 35168-69 (2)
|Miscellaneous Information||Max Size:||3.84 cm SL|
|Temperature range:||22 – 26°C|
|Conservation status:||This species is on the IUCN Red List as Vulnerable (D2).|
|Etymology:||From the Latin simplex meaning plain.|