Ripple Mandarin Perch (Siniperca undulata)

The Ripple Mandarin Perch (Siniperca undulata) is a rare and visually distinct member of the Chinese perch family, recognized for its flowing, wave-like pattern across the body. This natural camouflage allows it to blend seamlessly into its environment before striking prey with explosive speed.

Highly sought after by collectors, this species offers a unique alternative to more common mandarin fish while delivering the same intense ambush predator behavior.

Max Size

• 10–14 inches in captivity
• Streamlined, muscular predator

Tank Size

• Minimum: 75–90 gallons (juvenile)
• Recommended: 125–180+ gallons for adults
• Provide structure with hiding spots and open ambush areas

Tank Mates

• Highly predatory
• Best with:
  • Similar-sized, robust fish
  • Other predators (with caution)
• Avoid:
  • Small fish (will be eaten)
  • Slow or delicate species

Diet

Strict carnivore:

• Live feeder fish (often required initially)
• Frozen/thawed fish, shrimp, and worms
• Rarely accepts pellets

👉 Feeding can be challenging—experience recommended

Care & Behavior

• Ambush predator—prefers dim lighting and cover
• Can be shy during acclimation
• Requires excellent water quality and strong filtration
• Low activity with sudden bursts during feeding

Why We Love Them

• Unique ripple/wave-like pattern
• Rare and highly collectible species
• Intense predator behavior
• Perfect for Asian predator setups

⚠️ Important Notes

• Not beginner-friendly
• Often requires live feeding initially
• Extremely predatory—tank mates must be chosen carefully
• Sensitive to poor water quality