Crowntail Betta (Betta splendens) is a stunning and popular variant of the Siamese fighting fish, known for its spiky, crown-like tail fins.

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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 

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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 [

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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: <20 ppm
• Tip: Use Indian almond leaves for natural tannins and stress reduction 

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Diet

• Type: Carnivorous
• Staples:
  • Live/frozen: brine shrimp, bloodworms, mosquito larvae
  • High-quality Betta pellets
• Feeding Frequency: 2–3 small meals daily; remove uneaten food after 2 minutes
• Tip: Fasting once a week helps prevent constipation 

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Breeding

• Method: Bubble nest builder
• Setup:
  • Separate breeding tank with warm, shallow water
  • Male builds bubble nest; female lays eggs
  • Male guards and tends to eggs until hatching (~2–3 days)
• Fry Care:
  • Feed infusoria or liquid fry food, then baby brine shrimp
  • Keep water clean and warm 

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Tankmates

• Compatible With:
  • Peaceful, non-fin-nipping fish (e.g., Corydoras, small rasboras)
  • Snails and shrimp (with caution)
• Avoid:
  • Other male Bettas
  • Fast or aggressive fish
  • Long-finned species (may trigger aggression)