Halfmoon Male Betta – Mustard Gas (Betta splendens)
A bold halfmoon betta featuring deep blue tones with vibrant yellow finnage
The Halfmoon Male Betta – Mustard Gas is one of the most iconic and sought-after betta colour varieties. Showcasing a rich metallic blue or navy body contrasted by bright mustard-yellow fins, this strain delivers dramatic colour separation and serious visual impact. When flared, the classic halfmoon tail spreads into a full 180-degree arc, creating an impressive, flowing display.
Perfect as a centrepiece for nano aquariums or minimalist aquascapes, this betta thrives in warm, stable water with gentle filtration and low flow. Like all male bettas, they are territorial and should be housed alone. Provide resting spots near the surface and soft planting to allow this showstopper to truly shine.
Need to Know:
Recommended For: Beginner to intermediate aquarists and nano aquarium enthusiasts
Minimum Tank Size: 20 litres
Temperature Range: 24–28°C
pH Range: 6.0–7.5
Recommended School Size: Keep singly (males are territorial)
Compatibility: Best kept alone; avoid fin-nipping species
Max Size: 6–7 cm
Shipping Disclaimer:
All fish are usually shipped on Monday or Tuesday mornings via an overnight courier. We use NZ Couriers for all livestock shipping, we find they handle your fish with the best possible care and have quick overnight delivery nationwide.
Special Requests:
If you have any requests for gender/colour etc we will do our best to accommodate them. Please note we can not always accommodate every request due to high stock turnover and what is available at the time. We move all fish sold online into separate holding tanks while they wait to be shipped.
Rural Shipping:
Good news! If you are a rural customer, we can still ship fish to you. Your order will be shipped to your nearest NZ Couriers Depot or Collect/Send Point and you will be phoned once it arrives. You can find your nearest depot/point here: https://nzcextras.co.nz/nearestlocation/
Payment & Security
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
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