Peaceful Betta (Betta imbellis) Ultimate Guide

peaceful betta

Peaceful Betta (Betta imbellis) Facts

Scientific name:  Betta imbellis
Common name: Peaceful betta
Family: Osphronemidae
Origin: Indonesia, Malaysia, Singapore
Usual size in fish tanks: 10 – 12 cm (3.94 – 4.72 inch)
Recommended temperature: 25 – 30 °C (77 – 86°F)
Recommended pH range for the species: 4.5 – 6
Recommended water hardness (dGH): 0 – 12°N (0 – 214.29ppm)
Aquarium: Peaceful Betta can coexist in pairs, species tanks, and community tanks. The pairs should be in an aquarium tank that is at least 10 gallons. If you intend to have more than 1 pair, you should get a 30 gallon tank or larger tank. Make sure you build in caves and add plants for the pairs.
Tank preferences: Middle levels
Water Conditions: Peaceful betta 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 mid-70s to low 80s F.
Reproduction & Sexing: Peaceful betta is a surface bubblenester. The males usually nest under objects on the surface of the water. The spawning is initiated by males to attract females to the nest for spawning.
You can differentiate males from females mostly by their color – males are more intensely colored and normally have longer fins while the females will be a browner in color however females should display an ovipositor or egg tube.
Temperament to its own species: peaceful
Temperament toward other fish species:peaceful
Lifespan: The expected lifespan for Peaceful betta is about 4 years. With good care and feeding you could extend their life.

Peaceful Betta (Betta imbellis) Generalization

  • They are colorful
  • The have beautifully shaped fins
  • They are originally from swamps or small, shallow ponds in Asia and have been bred in captivity for better color, overall appearance, and health.
  • The Peaceful Betta can be kept with other calm fish
  • To keep a pair of Peaceful Bettas or multiple pairs, you need a large aquarium
  • They have a crescent-shaped tail fin, hence the nickname “crescent betta”
  • Their other fins are short and rounded

Peaceful Betta (Betta imbellis) Distribution and Habitat

The peaceful or small fighting fish, Betta imbells, occurs in small stagnant waters and ditches on the southern Thai island of Phuket (Thailand) and on the Malay Peninsula (Malaysia).  

Although it also belongs to the foam nest-building species, it is still a peaceful fish that does not become aggressive towards its own kind or towards other pool members.

In terms of color, this little fighting fish is not inferior to the wild forms of Betta splendens.

Care and breeding are quite unproblematic. If possible, the water temperature should never exceed 25 ° C, otherwise this species can become susceptible to infections.

They thrive well when the following conditions are present in the aquarium:

  • Clean and clear water in the tank
  • Water temperature of around 34 ° C
  • A pH value of 7
  • Water hardness between 8 to 10 ° dHGH
  • Electrical conductivity 270 to 540 µS
  • Nitrite 0.05 mg NO2-N / l

Peaceful Betta (Betta imbellis) Characteristics, Shape and Color

  • Peaceful Betta can sometimes be indistinguishable from the other Betta species.
  • The tend to exist in communities
  • They are comparably smaller in size often reaching only maximum about 5cm in length
  • They are less attractive with fewer color combination that mostly confined to green, grey and black with patches of pale red plus blue
  • The body coloration of the males of Betta imbellis ranges from dark blue to deep black
  • The body of the females is more brownish
  • The fins of the males are larger than those of the females
  • The scale edges, parts of the gill covers and the fins of the males are colored bright aquamarine blue
  • The females have red-blue fins
peaceful betta
Male Peaceful Betta

Peaceful Betta (Betta imbellis) Biology and Behavior

Betta imbellis is one of the peaceful representatives of the fighting fish. They are neither aggressive towards one another nor towards other ornamental fish species and can therefore be kept well with similarly small fish.

Peaceful Betta (Betta imbellis) in the Aquarium

The care of Betta imbellis is very easy.

Just make sure you keep a maximum of two to three pairs of this extremely peaceful fighting fish together.

The fish feel good in soft, slightly acidic water with a brownish color, caused by humic substances released by a peat additive in the filter..

  • You should provide clean water in at least a 10-gallon aquarium. Should you choose to have more pairs, then settle for a 30-gallon of bigger aquarium.
  • Have a stabilized pH value, even though the fish do not seem to be too much affected by it
  • Maintain a constant and stable aquarium temperature. Peaceful Bettas can survive at a water temperature ranging from 70 to 82 degrees Fahrenheit
  • Add plenty of plants in the aquarium. The peaceful Bettas are natives of densely planted waters. The aquarium should be densely planted in places, bog roots and smaller caves made of stone structures serve the fish as additional retreats and hiding places

Peaceful Betta (Betta imbellis) Breeding

During Spawning

  • As a breeding approach, place a pair of Betta imbellis is placed in a separate tank of 20 to 30 cm in length
  • Reduce the water level to 15 to 20 cm
  • Females ready to spawn can be recognized by their strongly rounded belly and the white genital papilla
  • The female lays between 130 and 160 relatively large eggs per spawning run
  • The male wraps around the female while spawning. Then the male separates from the female, which continues to curve in an S-shape and remain paralyzed under the nest
  • The male swims under the female and catches the eggs trickling down and carries them into the foam nest
  • The male builds a small foam nest. So that it gets the necessary hold and does not melt on the surface of the water. You therefore need to add some finely feathered aquatic plants on the basin, some of which are then built into the nest for reinforcement
  • Sometimes the foam nest is not created on the surface of the water, but under a wooden root or a protruding stone

After spawning

  • Make sure to put the female back into the species tank
  • The brood hatches after just one day at a water temperature of 25 to 26 ° C.
  • They will use up their yolk sac within 2 to 3 days
  • After the young fish begin to swim, feed them very fine powdered food or boiled egg yolks passed through a sieve.
  • Now you can remove the male and put it back in the species tank
  • At first, the water temperature should not exceed 25 ° C during further rearing as the fish could otherwise become susceptible to diseases.
  • The young fish can later be fed with Artemia nauplii (Brine Shrimp)
Keeping a community of Bettas together

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