🐟 Nemo Koi Betta Fish (Betta splendens — marble pattern)
Solitary Display Fish • Clownfish-Inspired Orange-Red Palette • Colours That Keep Evolving
 
📋 The Nemo Koi Betta is named for its resemblance to a clownfish, with dominant orange and red and black accent markings, rather than the more white-and-black-based palette of a standard Koi. Every fish carries a unique combination.
"Koi" and "Nemo" are commercial names for a marble colour pattern in Betta splendens, not a separate species or fixed breed. The marble gene is a transposon, a piece of DNA that physically moves around the genome and switches pigment on or off as the fish ages. That means your fish's exact pattern keeps evolving throughout its life, independent of care quality: a fish that's mostly orange today may develop much more black or red marbling within a year or two. It's normal and not a sign of illness, and it's what makes a marble betta a living work of art that keeps surprising you.
Beyond the colour genetics, care is the same as for any betta: a warm, filtered, solitary setup with smooth décor.
 
💡 Highlights
🧡 Clownfish-Inspired Palette: Dominant orange and red with black accents
🎨 Colours That Keep Evolving: A living work of art
👑 A Solitary Display Betta: Best kept individually
✨ Every Fish Is Unique: No two marble patterns are alike
🌡️ Loves Warmth and Stability: Same care as any betta