Crowntail Betta (Betta splendens) is a stunning and popular variant of the Siamese fighting fish, known for its spiky, crown-like tail fins. Species Overview Scientific Name: Betta splendens Common Name: Crowntail Betta Size: 2.5–3 inches (body length; fins can extend further) Lifespan: 2–5 years with proper care Temperament: Aggressive toward own kind; peaceful with compatible species Tank Setup Minimum Tank Size: 5 gallons (10 gallons preferred) Substrate: Fine sand or smooth gravel Decor: Smooth ornaments, caves, and floating plants; avoid sharp edges Filtration: Gentle flow; sponge or hang-on-back filter Lighting: Dim to moderate; floating plants help diffuse light Aeration: Not required due to labyrinth organ, but good oxygenation is beneficial [ Water Parameters Temperature: 76–80°F (24–27°C) pH: 6.4–7.0 (neutral preferred) Hardness: 2–5 dKH Ammonia/Nitrite: 0 ppm Nitrate: