Betta fish are popular aquarium fish known for their vibrant colors and flowing fins. While most bettas are affordable, some rare varieties can fetch hundreds or even thousands of dollars. Here’s a look at five of the most expensive betta fish in the world.

1. Halfmoon Betta
- Known for its perfect 180-degree tail spread, the Halfmoon Betta is a favorite among collectors.
- Colors range from red, blue, green, to metallic shades.
- Prices for rare or top-quality Halfmoon Bettas can reach $100–$500.
2. Dragon Scale Betta
- Characterized by thick metallic scales resembling a dragon, these bettas stand out in any tank.
- Their colors are vivid and shiny, often with contrasting fins.
- Rare Dragon Scale Bettas can cost $200–$600 depending on size and color intensity.
3. Koi Betta
- Named after Koi fish due to their marbled, multi-colored patterns.
- Each fish is unique, making them highly collectible.
- Top-quality Koi Bettas can sell for $150–$400.
4. Black Orchid Betta
- One of the rarest bettas, featuring deep black body with iridescent fins.
- Breeding them is challenging, which increases their price.
- Black Orchid Bettas can go up to $500–$700.
5. Halfmoon Plakat (HMPK)
- Combines the Halfmoon tail spread with a shorter, robust body.
- Known for aggressive behavior and stunning fin display.
- Rare HMPKs can sell for $100–$300 or more.
Tips When Buying Expensive Betta Fish
- Source from reputable breeders to ensure health and authenticity.
- Check for health signs: active swimming, bright colors, clear eyes, and intact fins.
- Provide proper care: expensive bettas require clean water, high-quality food, and a stress-free environment.
- Avoid overcrowding: one betta per tank is ideal to prevent aggression.
These five betta varieties are prized for their rarity, unique appearance, and beauty. Investing in them requires care and knowledge, but owning one can be a highlight for any aquarium enthusiast.