Moderate
Betta spl. male Halfmoon Mustard
24–30°C · pH 6–7.5 · 38L
£37.99
Halfmoon bicolor big ears male betta, 6–7 cm with full spread and fanned pectorals. Aggressive. 24–30°C, 25 L minimum.
Adult size is the maximum length this species reaches at full maturity (scientific sources). The livestock you receive will be younger and smaller — pick a size variant above for the actual shipping size. Photos are AI-enhanced, so the animal may show subtle colour or marking differences.
Betta spl. male halfmoon bicolor big ears
Halfmoon bicolor big ears male betta, 6–7 cm with full spread and fanned pectorals. Aggressive. 24–30°C, 25 L minimum.
Adult size is the maximum length this species reaches at full maturity (scientific sources). The livestock you receive will be younger and smaller — pick a size variant above for the actual shipping size. Photos are AI-enhanced, so the animal may show subtle colour or marking differences.
The betta fish is one of the most popular and most misunderstood freshwater species. This guide covers everything from proper tank size to the truth about tank mates.
Maintain these water conditions for optimal health and vibrant colors
Three show traits meet on this one male: the halfmoon's 180-degree tail, a clean two-colour bicolor split between body and fins, and the oversized big ear pectorals that fan either side of the head as he swims. At 6–7 cm he carries a lot of genetics for one fish, and the combined effect in open water is constant motion — tail spread behind, pectorals working like paddles in front.
Owning him means accepting a fighter's rulebook. The record grades him aggressive with moderate care needs, recommending peaceful snails as company, peaceful shrimp only under careful monitoring, and very carefully selected peaceful tank mates solely in larger aquariums. It bars other male bettas, fin-nipping fish, aggressive or highly territorial species, fast boisterous tank mates that stress him, and fish with similar body shapes or long flowing fins that read as rivals. He settles from 25 litres upward, with water held between 24 and 30 °C, pH 6.0–7.5 and hardness from 1 to 15 dGH. All that finnage prefers gentle flow and surface resting spots, and his territorial drive rises when breeding condition develops. He is a top-region fish through and through.
Three traits mean three things to maintain, and diet carries most of the load: a varied carnivore menu keeps the halfmoon spread full, the bicolor boundary crisp and the big-ear pectorals — which never stop moving — fuelled. His 25-litre minimum wants the gentle-flow treatment owed to any heavily finned male, plus surface resting points he will use between patrols. Temperature can sit anywhere in 24–30 °C provided it stays put; pH 6.0–7.5 and 1–15 dGH cover the chemistry. Watch the pectorals as your condition gauge — steady fanning is his baseline, and any change there shows before the larger fins react. Kept singly as his record advises, he is a complete display in one fish.
Triple-trait males of this quality rarely sit in stock for long — the bicolor big ear halfmoon combination is among the most requested we carry. Insulated UK despatch with a licensed live-animal courier; live arrival guaranteed.
24–30°C · pH 6–7.5 · 38L
24–28°C · pH 6–7.5 · 20L
24–30°C · pH 6–7.5 · 20L
24–30°C · pH 6–7.5 · 38L
24–30°C · pH 6–8 · 38L
24–28°C · pH 6–7.8 · 19L
18–26°C · pH 6.5–8 · 30L
23–27°C · pH 7.4–8.4 · 500L
20–27°C · pH 6–7 · 54L
23–27°C · pH 7.4–8.4 · 150L
24–28°C · pH 6.5–7.8 · 300L
20–24°C · pH 7–8 · 45L
24–28°C · pH 6.5–7.5 · 2000L
24–28°C · pH 7.5–8.5 · 200L
24–28°C · pH 5.5–7 · 60L
18–25°C · pH 6–8 · 100L
24–28°C · pH 7–8 · 120L
18–28°C · pH 6.5–8 · 20L
24–27°C · pH 7.5–8.8 · 150L
22–26°C · pH 6–7.5 · 60L
24–28°C · pH 7.5–8.5 · 40L
24–28°C · pH 7.5–8.5 · 500L