CheckMyFishTank

Green Terror care

Andinoacara rivulatus · Freshwater · Intermediate level care

Green Terror, painted illustration

A large, aggressive cichlid for big tanks and tough tankmates.

Smallest tank80 gallons
Adult size10 inches
Temperature72 to 75°F
pH6.5 to 7.8
GroupOne per tank
TemperamentAggressive
SwimsBottom of the tank
Lives8 to 10 years
Watch for: Very aggressive toward other fish, especially during breeding.

Feeding

Twice a day. A modest portion of pellets they finish in about 3 minutes. Cichlid pellets, frozen foods, earthworms.

Eats fish small enough to fit in its mouth.

Claims a territory and guards it.

Good tank mates

Fish that pass every check with Green Terror in a 160 gallon tank: same water, overlapping temperature, nobody gets eaten and no bullies.

Do not mix with

  • Neon Tetra: Green Terror grows big enough to eat Neon Tetra.
  • Cardinal Tetra: Cardinal Tetra and Green Terror need different water temperatures.
  • Green Neon Tetra: Green Terror grows big enough to eat Green Neon Tetra.
  • Black Neon Tetra: Green Terror grows big enough to eat Black Neon Tetra.
  • Ember Tetra: Green Terror grows big enough to eat Ember Tetra.
  • Lemon Tetra: Green Terror grows big enough to eat Lemon Tetra.
  • Glowlight Tetra: Green Terror grows big enough to eat Glowlight Tetra.
  • Black Skirt Tetra: Green Terror grows big enough to eat Black Skirt Tetra.

Questions

What size tank does a Green Terror need?

At least 80 gallons. Adults grow to about 10 inches, so plan for the adult size, not the size at the store.

What temperature does a Green Terror like?

72 to 75 degrees Fahrenheit, with a pH of about 6.5 to 7.8. A steady temperature matters more than hitting one exact number.

How many Green Terror should I keep together?

Keep only one. Green Terror fight their own kind.

What do Green Terror eat?

Cichlid pellets, frozen foods, earthworms. Feed twice a day: a modest portion of pellets they finish in about 3 minutes.

Sources

Checked against these sources on 2026-11-10. When sources disagree we use the safer number.