Falx betta

Betta falx

Also known as Sickle betta, Red Skirt Betta

FreshwaterFish

Care at a glance

Temperature
73–81°F
23–27°C
pH
5.0–6.8
Adult size
2 in
5 cm
Minimum tank
16 gal
60 L
Temperament
Mostly peaceful
Tankmates
With caution
Diet
Carnivore
Breeding
Mouthbrooder · Medium
Rarity
Rare
Family
Osphronemidae
Origin
Endemic to Sumatra, Indonesia, in shaded forest swamp streams and pools with humic stained water.

Overview

The Falx betta is a small, mostly peaceful betta for a dim, densely planted tank. It is a step up from the easiest fish.

Did you know

The Falx betta's name comes from the Latin falx, meaning sickle. It refers to the curved mark this small betta carries.

Caring for the Falx betta

A pair or small group of Falx bettas settles well in at least 16 gal (60 L), with a base of 60 cm. Give them a dim tank with driftwood, leaves, dense planting and plenty of cover. Keep a tight lid on top.

Soft, acidic, mineral-poor water keeps Falx bettas in good health. Hold it at 73 to 81°F (23 to 27°C) and a pH of 5.0 to 6.8. Feed small live and frozen foods such as daphnia, artemia and bloodworm.

Falx bettas are mostly peaceful and swim in the middle of the tank. Keep them in a species tank or with small, peaceful fish.

They are paternal mouthbrooders, and the male broods the eggs in his mouth for roughly 9 to 12 days. Breeding them is a moderate challenge.

Good to know

The Falx betta was described by Tan and Kottelat in 1998. It belongs to the Betta picta complex in the family Osphronemidae. It is also sold as the sickle betta or red skirt betta.

In the wild

The Falx betta is found only on Sumatra, Indonesia, in shaded forest swamp streams and pools. The water is soft, acidic and stained by tannins, and submerged roots and leaf litter cover the bottom.

Common questions

What size tank does a Falx betta need?

A Falx betta needs at least 16 gal (60 L). It spends most of its time in the middle.

What temperature and pH does a Falx betta need?

A Falx betta is comfortable at 73–81°F (23–27°C) with a pH of 5.0–6.8.

What does a Falx betta eat?

A Falx betta eats small live and frozen foods, such as daphnia, artemia and bloodworm.

How big does a Falx betta get?

An adult Falx betta reaches about 2 in (5 cm).

How does a Falx betta breed?

The Falx betta is a paternal mouthbrooder, so the male holds the eggs in his mouth for roughly 9 to 12 days. Breeding it is a moderate challenge.

Related species