Common Name(s)
Green Terror Cichlid
Scientific Name
Andinoacara rivulatus
Found mainly in South America.
Females are more aggressive than the males.
Maximum Size
14 inches (35.56 cm)
Minimum Tank Size
150 gallon for each pair.
Tank Setup
They need a lot of space for swimming. Gravels with some rocks are suitable for decoration but plants will not work as they will uproot them. Requires a good filtration as they are messy eaters. Perform 25-30% water change every week.
Tank Region
All over the tank.
Generally Green Terrors are carnivorous. Feed them a good mixture of high quality cichlid pellets, krill, frozen bloodworms, earthworms, crickets, etc. Feed them 2-3 times daily to enhance the blue-green colour.
Females lays the eggs in a cave or on a rock . During this time both the parents will guard the eggs. It is best to move the mated pair in a breeding tank as they become very aggressive towards other tank mates.
It is best to keep them with same species only.
Ease of Keeping
pH-6.5-7.5, Temperature-72.0 to 80° F. Since they are messy eaters Canister Filter is really good for them.

By MidgleyDJ at en.wikipedia, CC BY 2.5,

Males have humps whereas the females are humpless. There will be a red band on the tail of male Green Terror. Also, the males are larger than females.