Betta (Siamese fighting fish) size: how big does it get?

Adults reach about 6.5 cm. Record sizes among the 21 Betta species on LumaReef: 2 cm (Snakehead Betta) to 9 cm (Giant betta).

Betta (Siamese fighting fish) tank size: what is the minimum?

A tank at least 45 cm long. In LumaReef that is the Nano tank or larger.

Betta (Siamese fighting fish) water parameters: what does it need?

Temperature 24–29 °C, pH 6.0–7.8, hardness 3–15 °dGH. Close to what most Betta on LumaReef need (22–28 °C).

Betta (Siamese fighting fish) tank mates: what can it live with?

It gets along with 25 of the 99 freshwater species in the catalogue, such as Diamond tetra, Dwarf gourami, and Swordtail.

Betta (Siamese fighting fish): is it endangered?

The IUCN Red List rates it Vulnerable. Threatened among the 18 assessed Betta species on LumaReef: 13.

FreshwaterIn the market90 coinsCommon

Betta (Siamese fighting fish)

Betta splendens

A stately surface fish that treats any long-finned fish as a rival.

The Betta (Siamese fighting fish) (Betta splendens) is a tropical freshwater fish of the family Osphronemidae. It swims in midwater, close to the bottom. Adults grow to about 6.5 cm. The IUCN Red List rates it Vulnerable. In the aquarium it needs a tank at least 45 cm long and water at 24–29 °C.

Size: 6.5 cm
Smallest tank: 45 cm
Temperature: 24–29 °C
Care: Easy

In the aquarium

Temperature24–29 °C

pH6.0–7.8

Hardness3–15 °dGH

Temperament: Aggressive
Diet: Carnivore
Activity: Calm
Water layer: Surface
Group: Lives on its own
Plants: Plant safe

These values are compiled from real species data, and the LumaReef simulation is built to keep them true to life.

Which tank it fits

Nano60 cm · 65 litres13 of them
Standard90 cm · 180 litres36 of them
Wide120 cm · 300 litres60 of them
Living room180 cm · 650 litres130 of them
Showcase250 cm · 1,200 litres240 of them
Gallery300 cm · 1,440 litres288 of them

Who it lives with

Gets along25 species

and 1 more species

Caution1 species

Narrow shared temperature range

Black skirt tetra

Not together73 species

Aggressive with peaceful

Water temperatures do not overlap

These two do not get along

In the wild

Water type: Freshwater
Climate zone: Tropical
Habitat: Midwater, close to the bottom
Aquarium trade: Very common

Conservation status

Classification

OrderAnabantiformes
FamilyOsphronemidae
GenusBetta
SpeciesBetta splendens
Described byRegan, 1910

In other languages

English: Siamese Fighting Fish
German: Siamesischer Kampffisch
Spanish: Pez Beta
Italian: Pesce combattente
Dutch: Siamese kempvis
Turkish: Betta Balığı
Russian: Бойцовая рыбка-петушок
Chinese: 鬥魚

Quick answers

Betta (Siamese fighting fish) size: how big does it get?: Adults reach about 6.5 cm. Record sizes among the 21 Betta species on LumaReef: 2 cm (Snakehead Betta) to 9 cm (Giant betta).
Betta (Siamese fighting fish) tank size: what is the minimum?: A tank at least 45 cm long. In LumaReef that is the Nano tank or larger.
Betta (Siamese fighting fish) water parameters: what does it need?: Temperature 24–29 °C, pH 6.0–7.8, hardness 3–15 °dGH. Close to what most Betta on LumaReef need (22–28 °C).
Betta (Siamese fighting fish) tank mates: what can it live with?: It gets along with 25 of the 99 freshwater species in the catalogue, such as Diamond tetra, Dwarf gourami, and Swordtail.
Betta (Siamese fighting fish): alone or in a group?: It can be kept on its own.
Betta (Siamese fighting fish) and plants: is it plant safe?: Yes, it leaves plants alone.
Betta (Siamese fighting fish): is it endangered?: The IUCN Red List rates it Vulnerable. Threatened among the 18 assessed Betta species on LumaReef: 13.