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Betta (male)

Freshwater Beginner Aggressive

Betta (male) grows to about 6 cm and needs a tank of at least 4.2 UK gal. Here's how to keep it healthy and what it lives well with.

Quick facts

Water type
Freshwater
Group
Bettas & gouramis
Difficulty
Beginner
Temperament
Aggressive
Swims
Top
Adult size
6 cm
Minimum tank
4.2 UK gal
Min swim length
30 cm
Group size
Fine on its own

Water parameters

Temperature
24–30 °C
pH
6–7.5
Hardness
5–15 dGH

Tank & care

Betta (male) doesn't need a group and can be kept singly; choose tankmates to suit its temperament.

Give it at least 30 cm of swimming length and hold the water around 24–30 °C. Match any new species to these ranges before adding them.

Plan a tank with this fish

Use the stocking calculator to see how many Betta (male) your tank can hold and whether your planned tankmates are compatible — it's anchored to your net water volume and footprint.

Open the stocking calculator Calculate tank volume

Figures are conservative hobby-consensus estimates for planning. Individual fish vary — always research a species and watch how yours behave.

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