Emerald Betta
Betta smaragdina
Emerald Betta is a top swimmer.
Save this fish or add it directly to one of your aquariums.
Need help with Emerald Betta?
Explore compatibility, care or problems using this guide and your aquarium’s conditions.
Quick facts
- Adult size
- ≤ 2.8" (≤ 7 cm)
- Aquarium size
- 11 US gal (41 L) or larger / ≥ 17.7" (≥ 45 cm) minimum length
- Care level
- Beginner – Intermediate
- Temperament
- Semi-Aggressive
- Swimming zone
- Top swimmer
- Temperature
- 72–79°F (22–26°C)
- pH
- 5.5–7.5
- GH
- 2–10 dGH
- Diet
- Omnivore
- Lifespan
- up to 5 years
Care requirements
Care level: Beginner – Intermediate.
Lifespan: up to 5 years.
Aquarium size and space needs
Minimum aquarium size: 11 US gal (41 L) or larger / ≥ 17.7" (≥ 45 cm) minimum length. Plan the layout and stocking within that limit.
Water parameters
Suitable water: temperature 22–26 °C, pH 5.5–7.5, GH 2–10 dGH.
Temperament and compatibility
Emerald Betta needs careful companion choice because it can be territorial or semi-aggressive.
Swimming zone and behavior
This fish uses the upper part of the aquarium, so leave enough surface space for movement and feeding.
Feeding
As an omnivore, Emerald Betta should receive a varied diet rather than one repeated food type.
Before adding this fish
- Plan for an aquarium of 11 US gal (41 L) or larger / ≥ 17.7" (≥ 45 cm) minimum length.
- Choose other fish carefully around this temperament.
- Offer a varied diet that matches this species.
Natural habitat and origin
Origin: Laos, Thailand.
Similar fish profiles
Use these profiles to compare fish with similar care level, size, temperature range, or swimming behavior.
FAQ
How large does Emerald Betta get?
Emerald Betta reaches ≤ 2.8" (≤ 7 cm).
What aquarium size does Emerald Betta need?
Use an aquarium of at least 11 US gal (41 L) or larger / ≥ 17.7" (≥ 45 cm) minimum length.
Is Emerald Betta peaceful?
Emerald Betta needs more careful companion choice because the temperament data points toward boundaries, space, or similar-sized fish.
What temperature is suitable for Emerald Betta?
Keep it between 22 to 26 °C.
