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Teleostei (teleosts) > Anabantiformes (Gouramies, snakeheads) > Osphronemidae (Gouramies) > Macropodusinae
Etymology: Betta: Malay/Javanese origin. Bleeker (1850, 1858) indicates Ikan Wadder Bettah as the local name of Betta trifasciata Bleeker, 1849 (now Betta picta, Valenciennes, 1846) in the Ambarawa Javanese dialect. Ikan Wader is a common Javanese name for smaller freshwater fishes, especially cyprinids (already used in Old Javanese). See Blust, R. & Trussel, S. Austronesian Comparative Dictionary. Web Edition (https://www.trussel2.com/acd/); ideii: Named after Takashige Idei, the intrepid fish collector and friend.
Eponymy: Takashige Idei is a Japanese researcher of the Betta genus. [...] (Ref. 128868), visit book page.

Environment: milieu / climate zone / depth range / distribution range Ecology

Freshwater; benthopelagic. Tropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Asia: Kalimantan Selatan in Borneo, Indonesia.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 8.3 cm SL male/unsexed; (Ref. 57022)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 0 - 1; Dorsal soft rays (total): 8 - 9; Anal spines: 1 - 2; Anal soft rays: 30 - 32. Presence of an orange patch in front of eye continuous to upper jaw when live (pale yellow to white when preserved, character shared with Betta patoti). Large males almost totally jet black or dark brown when preserved. Anal fin with 32-33 rays. Dorsal fin with 8-9 rays. Lateral line with 34 1/2-35 scales. Predorsal scales 25-27. Predorsal length 67.8-69.5% SL (Ref. 57022).

Facultative air-breathing (Ref. 126274)

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

Tan, H.H. and P.K.L. Ng, 2006. Six new species of fighting fish (Teleostei: Osphronemidae: Betta) from Borneo. Ichthyol. Explor. Freshwat. 17(2):97-114. (Ref. 57022)

IUCN Red List Status (Ref. 130435: Version 2024-1)

Data deficient (DD) ; Date assessed: 07 December 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

More information

Trophic ecology
Food items
Diet composition
Food consumption
Food rations
Predators

Ecology
Ecology

Population dynamics
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Recruitment
Abundance

Life cycle
Reproduction
Maturity
Maturity/Gills rel.
Fecundity
Spawning
Spawning aggregations
Eggs
Egg development
Larvae
Larval dynamics

Distribution
Countries
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Occurrences
Introductions
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Anatomy
Gill area
Brain
Otolith

Physiology
Body composition
Nutrients
Oxygen consumption
Swimming type
Swimming speed
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)

Genetics
Genetics
Heterozygosity
Heritability

Human related
Aquaculture systems
Aquaculture profiles
Strains
Ciguatera cases
Stamps, coins, misc.

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Taxonomy
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References
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Internet sources

Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01000 (0.00377 - 0.02651), b=2.97 (2.74 - 3.20), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.3 ±0.4 se; based on size and trophs of closest relatives

Resilience (Ref. 120179): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

Betta ideii Tan & Ng, 2006