Mono Peacock Bass (Cichla monoculus)

Mono Peacock Bass (Cichla monoculus)

The Mono Peacock Bass is one of the most popular and accessible species in the Cichla genus, known for its aggressive feeding response, fast growth, and classic peacock bass appearance. With its golden-green body and signature tail “eye spot” (ocellus), this fish brings true predator energy to any aquarium.

Highly interactive and constantly on the move, Cichla monoculus is a top choice for monster fish keepers looking for an active, hard-hitting centerpiece.

Max Size

• 24–30 inches in captivity
• Fast-growing, thick-bodied predator

Tank Size

• Minimum: 180 gallons (juvenile grow-out)
• Recommended: 300–500+ gallons for adults
• Requires long tanks with open swimming space

Tank Mates

• Aggressive and highly predatory
• Best with:
  • Arowana
  • Large catfish
  • Datnoids
  • Other large, fast fish
• Avoid:
  • Small fish (will be eaten)
  • Slow or delicate species

Diet

Carnivorous:

• High-quality pellets (train early)
• Frozen fish, shrimp, worms
• Occasional live foods

👉 Extremely aggressive feeder—very interactive

Care & Behavior

• Very active swimmer—needs space
• Intelligent and responsive to owners
• Heavy waste producer—strong filtration required
• Can become territorial with age

Why We Love Them

• Classic peacock bass look
• Explosive feeding behavior
• Fast growth and strong presence
• Perfect for monster fish tanks

⚠️ Important Notes

• Grows very large—plan ahead
• Requires serious filtration and maintenance
• Can be aggressive toward tank mates
• Not suitable for small setups