What size tank does a OB Peacock need?

OB Peacock needs a minimum of 40 gallons, with 60 gallons recommended. They are middle swimmers.

Is OB Peacock good for beginners?

OB Peacock is rated "intermediate" difficulty (2/5). Great for beginners.

What fish are compatible with OB Peacock?

OB Peacock is semi-aggressive. Compatible tank mates include other semi-aggressive fish with similar water parameters (pH 7.5-8.5, temp 75-82°F). Give adequate territory space.

🐟

OB Peacock

Aulonocara sp. OB

Family: Cichlidae • Origin: Various

OB Peacock (Aulonocara sp. OB) is a semi-aggressive cichlid reaching 6 inches. Can be kept singly. Minimum tank: 40 gallons.

Min Tank

40 gal

Max Size

Temperature

75-82°F

7.5-8.5

Lifespan

7 years

School Size

Solo OK

Swim Level

middle

Hardness

5-15 dGH

semi-aggressiveintermediateomnivore

Is OB Peacock Right for Your Tank?

OB Peacock is an excellent choice for beginners — rated "intermediate" difficulty (2/5). They're hardy, forgiving of minor water parameter fluctuations, and generally easy to feed. They need at least 40 gallons — a mid-size tank commitment. Plan your space accordingly.

OB Peacock is semi-aggressive — they can live with others but may bully smaller or slower fish. Choose tank mates carefully. They are territorial — provide adequate hiding spots and maintain enough space to reduce aggression. Expected lifespan: 7 years with proper care.

Common Mistakes with OB Peacock

✗

Relying on a heater without a thermometer

OB Peacock needs 75–82°F. Heaters malfunction or drift over time — always use a separate thermometer to verify. Temperature swings of even 3–4°F can trigger stress and disease, particularly ich.

✗

Putting them in a tank under 40 gallons

Many beginners underestimate tank size needs. OB Peacock requires at least 40 gallons — ideally 60. Cramped tanks lead to stunted growth, aggression, and poor water quality.

✗

Housing with peaceful nano fish

OB Peacock is semi-aggressive and territorial — small, peaceful species like neon tetras, endlers, or celestial pearl danios will be stressed, bullied, or eaten. Choose tank mates that can hold their own.