You want a healthy beautiful Betta, buy from Tropicflow! All my Bettas came healthy and well fed! Honestly, I only buy from Tropicflow for Bettas. Communication A++.
Grower Pick Product
Mustard Gas Blue Halfmoon Male Betta Fish
Mustard Gas Blue Halfmoon Male Betta Fish
Regular price
$25.00 USD
Regular price
$40.00 USD
Sale price
$25.00 USD
Unit price
per
Shipping calculated at checkout.
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Grower Pick Product
Grower Pick Product
Flat Rate Shipping As Low As $25
Flat Rate Shipping As Low As $25
At Tropicflow, we strive to make the shipping process as affordable and convenient as possible for our customers. Our flat rate shipping starts as low as $20, and the more fish you purchase, the more you save on shipping fees. We encourage our customers to combine as many fish as possible in each order to take advantage of these cost-saving opportunities.
High Quality Product
High Quality Product
At Tropicflow, we take pride in shipping only the highest quality product to our customers. Our fish, plant are carefully selected for their excellent health, vibrant colors, and wide, full tails.
100% Live Arrive Guarantee
100% Live Arrive Guarantee
Tropicflow takes great pride in the quality of our products, and we proudly extend a 100% Live Arrival Guarantee for every shipment we dispatch. In the unfortunate event that any of the livestock or plants in your order do not survive upon arrival, we are dedicated to offering you a full refund in the form of store credit, covering the precise cost of the item, excluding shipping expenses. Your satisfaction is our commitment!
๐๐ Mustard Gas Blue Halfmoon Male Betta Fish
โก Electric Blue Power with Golden Flame
Introducing the Mustard Gas Blue Halfmoon Male Betta Fishโone of the most iconic and high-contrast Betta color combinations ever bred. This striking variety features a deep blue metallic body layered with iridescent sheen, flowing seamlessly into a bold mustard-yellow Halfmoon tail that glows like fire against the blue base.
The metallic blue body flashes sapphire, cobalt, and steel highlights under aquarium lighting, while the yellow fins remain bright, soft, and luminous. When fully flared, his wide Halfmoon tail creates a dramatic two-tone display that feels both powerful and elegant.
Balanced, expressive, and visually explosive, this Betta is a true classic that never goes out of style.
๐ Why Choose Our Mustard Gas Blue Halfmoon Betta?
- ๐ Blue Metallic Body: Rich blue base with metallic shimmer that reacts beautifully to lighting.
- ๐ Mustard Gas Yellow Fins: Bright yellow Halfmoon tail and fins for maximum contrast.
- ๐ Premium Halfmoon Form: Wide, symmetrical tail spread approaching 180ยฐ, smooth and balanced.
- โจ Light-Reactive Contrast: Metallic body and soft yellow fins create layered visual depth.
- ๐ช Strong & Healthy: Hardy, alert, and well-suited for stable, low-flow aquariums.
- โจ WePick Guarantee: Hand-selected for blue saturation, yellow clarity, and fin symmetry.
๐ฆ Quick Facts
| Attribute | Details |
|---|---|
| ๐ง Care Level | Easy |
| ๐ค Temperament | Semi-Aggressive |
| ๐ Diet | Carnivore |
| ๐ Tank Requirement | 1 Male per Aquarium |
| ๐ก Minimum Tank Size | 4 Gallons |
| ๐ Approx. Size | 1.5" โ 2" |
| ๐ก๏ธ Temp Range | 76ยฐF โ 82ยฐF |
| ๐ Filter | Gentle Flow Preferred |
| ๐ฝ๏ธ Food | Betta Pellets, Bloodworms, Brine Shrimp |
๐ก Display Tips:
- ๐ชต Driftwood Contrast: Use Dragon Driftwood for dramatic texture or Pacific Driftwood for clean linesโboth highlight blue metallic tones and yellow fins.
- ๐ฆ Cube Tank Setup: A rimless cube aquarium (5โ10 gallons) provides ideal viewing angles for full flare displays.
- ๐ Dark Substrate: Black sand or soil intensifies blue metallic shimmer and mustard-yellow glow.
- โจ Directional Lighting: High-Kelvin LEDs or spotlights enhance metallic flashes while keeping fins bright.
- ๐ฟ Minimal Aquascape: Simple layouts allow color contrast to dominate.
๐ก Ideal For:
- High-contrast display aquariums
- Collectors of classic Mustard Gas Bettas
- Modern aquascapes with controlled lighting
- A bold centerpiece fish with timeless appeal
๐ A True Betta Icon. Add the Mustard Gas Blue Halfmoon Male Betta Fish to your aquarium and enjoy one of the most dramatic color contrasts in the Betta world.
Customer Review
Customer Reviews
Overall rating: 4.9 / 5 from 37 reviews.
I am very happy with my purchase and will be buying another one + some snails in the next two weeks! I love him, I named him Ferro!
Great shopping. Gorgeous fish. If I had more tanks set up I'd have more!
Thank you! I love this Betta fish! Heโs so beautiful!
Beautiful fish!!!
He is better than expected!!!
Our fish arrived decently quick. We were able to get him settled and he's very healthy. My 5yr old is so excited to have a fish his 2 favorite colors.
Hopefully the video comes through.
The male betta fish is great and I'm very happy! One of the two female bettas died and I don't know why. The other fish in that tank are fine. Maybe it was the stress of travel?
Beautiful
This was my first experience buying fish online, so I was a little nervous. He shipped fast and was packaged well with a heat pack. He is healthy and spunky! Not to mention gorgeous! Thank you!
Love my beautiful sweet fishy! Not as vibrant as the pic but beautiful nonetheless.
my betta is beautiful and healthy
Meet gas! Beautiful fish and so friendly ๐
Very healthy beautiful fish would order from you guys instead!
Super vibrant colors, he came healthy and has been really active!
My betta showed up alive and healthy! First time ordering a betta online and it turned out great.
I love him so much! They were super nice and quick with the ordering! Thank you so much
Heโs so beautiful!!! Iโm in love! Thank you very much! โค๏ธ
Fish as beautiful as the pictures and arrived sooner than I expected. Happy with the purchase!
My son loves his betta Lola pretty much! looking forward to buy more.
Made it safely and alive. I order 3 different half moon betta all are alive.
Great quality betta fish and outstanding for delivering on time
I love all of them! They are stunning and arrived very much alive!! No clouded eyes or dull color! They are perfect! Thank you so much!
This is my first time (properly) owning and keeping a beta. the owner was sooo awesome, patient and kind. Fish was in great condition and all of the fish seem well kept! Highly recommend.
He is so friendly and outgoing. He loves attention and is the most gorgeous betta Iโve ever seen. I couldnโt be happier with thus purchase.
A great quality fish! Highly recommended will be buying again
Out of stock, replace with a vibrant halfmoon betta.
Nice looking betta! Very impressive!
Absolutely gorgeous fish. This is my thirds fish that Iโve purchased from this website so far and once again I have absolutely nothing to complain about.
This betta I bought from Tropicflow us way better than petsmart and petco. Conpare with size, color and grade. I will order again! Thank you!
Arrived quickly, healthy, and happy. He's doing great in his new home, I just love him.
My order arrived on time and was carefully, outstanding packaged. The fish acclimated well to its new home, and it's thriving in its tank
My fish arrived healthy and happy. He is so gorgeous!!! I highly recommend buying here. Excellent service, good ability to track the package, and well packaged for your new friend's safety during delivery.
Packaging was great! Moonshine arrived very healthy. Iโve had a handful of bettas and he is the most aggressive one so far. He flares at his mystery snail tank mate often. He seems happy and healthy after his first week. By far the most bubble nests Iโve seen with my bettas. My only disappointment is that the โmustardโ color is not very yellow. More peach/orange. He is still gorgeous!
Took out 1 star cause the blue is darker than the sample picture, overall he is great
Healthy fish, but very disappointing coloring. He looks nothing like what was pictured in the advertisement. The blue is not bright or reflective and more grey than blue, and the yellow is a dull, dirty brownish yellow color. Nothing like the brilliant blue and yellow that is advertized in the picture. Overall very disappointed in the color quality and the incredible difference from what I thought I was going to be getting. My excitement was immediately replaced with disappointment and regret.
