Green Terror Tropical Fish Information

Aequidens rivulatus
Green Terror
Behaviour Territorial, aggressive
Typical size 18cm
Max size 20cm
Tank Area Middle, bottom
Min Tank Size 120cm
Temp Min: 20℃ Max: 25℃
Feeding Flake, dried, frozen, meaty, live foods
pH Range 6-8.5
Hardness s,m,h,vh
Green Terror Aequidens rivulatus
  • Green Terror Aequidens rivulatus - thumbnail
  • Green Terror Aequidens rivulatus - thumbnail

Green Terror (Aequidens rivulatus)

Green Terror Tropical Fish Learn all about the Green Terror's feeding habits and food types, its behaviour, its origins, its natural habitats, is it male or female, breeding advice and information, suitable tank mates, its sizing and growth range, minimum tank size, water PH and more. Use our fish community creator tool to plan your tank set up and ensure that the Green Terror is the right fish for your aquarium.

The Green Terror is given an apt name, they are territorial, aggressive, and intolerant of other fish. Very hardy and robust fishes of a similar size may make suitable tankmates, although problems may always occur. Provide hiding spots amongst rocks and wood. The fish will adapt to a wide range of water conditions and is relatively easy to keep. Green Terrors are sometimes confused with the Blue Acara Aequidens pulcher which is a smaller and much more peaceful fish.

This fish is excluded from the Compatibility Checker as it is unsuitable for community aquariums or may require expert care.

Green Terror Facts

Family Cichlidae (Cichlids) | Synonyms Chromis rivulata, Acara aequinoctialis, A. azurifer, A. rivulata | Other names Vieja | Origin South America; Peru, western Ecuador | Breeding Egg layers; parents will care for eggs and young | Natural Water Conditions pH 6.5-8, hard | Natural Habitat Coastal streams | Sexing Males are larger and develop a forehead bump, females are darker

Green Terror Help and Advice

If you have a question about keeping Green Terror's then please use our Green Terror help forum. Join 100's of other fish enthusiasts with 1000's of years experience between them caring for and keeping fish like these.

Check Tankmates for the Green Terror fish species

Create a test community that includes the Green Terror fish species and other types you'd like to introduce - Assess tank size suitability based on filter type and volume, possible negative interactions and warnings.

Please check your water type for compatibility with your fish, which can be found on the Green Terror information box.
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