Half Moon Koi Betta – Product Description

The Half Moon Koi Betta (Betta splendens) combines the vibrant, unpredictable color patterns of the koi gene with the dramatic 180° spread of the Half Moon tail. These fish showcase splashes and marbling of orange, red, black, blue, and white, giving every individual a one-of-a-kind appearance — no two are ever the same.

Their flowing fins and bold colour patterning make them a show-stopping display fish ideal for aquascaped nano tanks or feature tanks. Highly sought after by collectors, the Koi Half Moon line is bred for strong coloration, symmetry, and fin quality.

Care Guide: Half Moon Koi Betta

Scientific Name: Betta splendens

Temperament: Semi-aggressive

Difficulty Level: Easy–Moderate (due to larger fins)

Minimum Tank Size

• 5 gallons or larger recommended

• Bigger tank = better fin health and water stability

️ Water Conditions

• Temperature: 76–82°F (24–28°C)

• pH: 6.5–7.5

• Hardness: Soft to moderately hard

• Filtration: Low-flow or sponge filter to avoid fin damage

️ Diet

To maintain colour vibrancy:

• High-quality betta pellets

• Frozen brine shrimp, bloodworms, daphnia

• Occasional live food for enrichment

• Feed small amounts 1–2 times daily

Tank Setup

• Heater required

• Gentle filtration

• Live or silk plants to protect fins

• Smooth decorations; avoid anything sharp

• Floating plants or leaf hammocks help simulate natural cover

• Keep lighting moderate — koi patterns show beautifully under soft LEDs

Tank Mates

Half Moon fins make them slow swimmers and prone to nipping from other species. Best options:

• Peaceful bottom dwellers (like pygmy corys or kuhli loaches)

• Shrimp or snails (compatibility can vary)

• Avoid fin-nippers and bright, flashy fish

• Best kept solo to highlight their beauty

❤️ Special Notes

• Koi bettas often change colour over time due to the marble gene

• Half Moon fins require clean water to prevent fin rot — weekly 20–30% water changes recommended

• Provide plenty of resting spots to avoid fatigue from heavy fins

• Ideal for aquascaped nano tanks where they become the true centerpiece