A beginner-friendly fish guide

Betta

Betta / Siamese Fighting Fish

Betta splendens

Territorial temperament; best kept alone. Check the planner before choosing tank mates.

Beginner level 3/5

A good environment

Recommended temperature
24 ~ 27°C
Recommended pH
6.5 ~ 7.5
Preferred water hardness
Medium hardness
Minimum aquarium
38L or more

Reference sources list a wider range of 22~30°C and pH 6.0~8.0. The planner uses the narrower range above as a safer starting point for beginners.

At a glance

Group
Labyrinth fish
Average adult size
about 7 cm (medium)
Minimum tank length
about 45 cm
Activity level
Low
Waste level
Low
Lid recommended
Yes
Mature tank preferred
Not required

Temperament & group size

Territorial temperament; Best kept alone.

Usually swims in the upper & middle.

Tank-mate notes

Adult shrimp may be attacked; take care with shrimp tank mates.

Baby shrimp may be eaten. A separate breeding tank is safer.

Check each combination carefully, especially when size or temperament differs.

Add Betta to my aquarium

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Frequently asked questions

How big does Betta get, and what tank size does it need?

Adults average about 7 cm, a medium species. The planner recommends an aquarium of at least 38 L and about 45 cm long.

What water temperature and pH does Betta need?

The planner range is 24~27°C and pH 6.5~7.5, with medium hardness. Reference sources list a wider range of 22~30°C and pH 6.0~8.0. The planner uses the narrower range above as a safer starting point for beginners.

How many Betta should be kept together?

Best kept alone. Temperament is territorial.

Can Betta live with shrimp?

Adult shrimp: use caution. Baby shrimp: not recommended.

Is Betta a good fish for beginners?

Beginner level 3/5. A lid is recommended. Activity: low; waste: low.