Emerald Betta
Betta smaragdina
Emerald Betta is a top swimmer.
Save this fish or add it directly to one of your aquariums.
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.