Halfmoon Mustard Gas Betta (Betta splendens) – Male

Halfmoon Mustard Gas Betta (Betta splendens)

Common Name: Mustard Gas Betta
Scientific Name: Betta splendens
Size: 2.5–3 inches (adult)
Origin: Selectively bred variant, originally from Thailand
Temperament: Semi-aggressive (especially toward other males or similar-looking fish)
Tank Size: Minimum 5 gallons (per male)
Water Conditions:

• Temperature: 76–82°F (24–28°C)

• pH: 6.5–7.5

• Hardness: Soft to moderately hard (3–12 dGH)

The Halfmoon Mustard Gas Betta is a stunning showstopper in the world of freshwater fish. Known for its dramatic coloration—deep blues or teals on the body with contrasting mustard yellow or orange fins—this variety also features the coveted Halfmoon tail, fanning out a full 180° when fully flared.

Perfect for nano tanks or desktop aquariums, this betta is not just a pretty face—it has personality! With proper care and enrichment (like floating plants, caves, or gentle water flow), Mustard Gas Bettas become interactive pets, often greeting their humans at the glass.

Fun Facts:

• The name “Mustard Gas” comes from the striking color contrast between body and fins, resembling the yellowish hue of the gas—but don’t worry, this beauty is perfectly safe!

• The Halfmoon tail is prized in betta shows for its symmetry and flare.

• Bettas breathe atmospheric air through their labyrinth organ, meaning they can thrive in low-oxygen environments (though clean water is still essential!).

Diet:
Carnivorous—enjoys high-protein betta pellets, frozen bloodworms, brine shrimp, and the occasional live treat.

Compatibility:
Best housed alone or with very peaceful tankmates like snails or small bottom-dwellers in a well-planted setup. Avoid fin-nippers or other long-finned fish. Never house two male bettas together.

Why You'll Love It:
Elegant, bold, and full of charisma, the Halfmoon Mustard Gas Betta is a living piece of art that brings movement, color, and charm to any aquarium.