What size tank does a green terror need?
At least 75 gallons (284 liters). The smallest standard tank that works is the 75 gallon. A bigger tank is always easier to keep stable. We give the size for an adult fish, because the small fish in the shop will grow. Scientific name: Andinoacara rivulatus.
How many green terrors in each tank size?
This is how many each standard tank carries comfortably if green terrors are the only fish in it. Share the tank with other species and the number goes down.
Keep one green terror per tank, whatever the size. Of the common sizes, these are big enough: 75 gallon, 125 gallon.
Check green terrors against your own tank and other fish
Good to know
- It eats fish small enough to swallow. Choose tankmates at least half its length.
Tank mates for green terrors
These animals like the same water, are a safe size, and have a temper that fits. It is a match on paper: always watch new tankmates for the first week.
- Red-tailed black shark
- Chinese algae eater
- Convict cichlid
- Black ghost knifefish
- Kissing gourami
- Jack Dempsey
- Oscar
- Severum
Poor matches
- Betta: Green terror (about 10 in) can eat betta (about 2.6 in).
- Guppy: Green terror is aggressive and will bully or kill peaceful fish such as guppy.
- Fancy goldfish: Goldfish do best with other fancy goldfish.
Questions and answers
What size tank does a green terror need?
At least 75 gallons (284 liters). The smallest standard tank that works is the 75 gallon. A bigger tank is always easier to keep stable.
How many green terrors should be kept together?
One is fine. A green terror does not need company, though a large enough tank can hold more than one.
Can green terrors live in a 10 gallon tank?
No. Green terror needs at least 75 gallons (284 liters), and grows to 10 in (25 cm), far too long for a 20 inch tank.
What temperature do green terrors need?
70–79 °F (21–26 °C), with a pH of 6.5–8. A heater is only needed if your room gets cold.
Can green terrors live with a betta?
It is not a good match. Green terror (about 10 in) can eat betta (about 2.6 in).
More fish
Adult size, tank size and water ranges follow the mainstream care consensus (Seriously Fish species profiles and FishBase maximum lengths). Where sources differ we use the more cautious figure. Stocking numbers come from our stocking calculator.