Cookies seem to be disabled in your browser, therefore this website will NOT work properly! Please, consider enabling Cookies in order to maximise your user experience while browsing.
Recent discussions at Aqua-Fish+
  1. TheFishWorks at A guide on growing aquarium plants with FAQ, forum and species on
  2. Salviashaman at A guide on caring for Congo tetra (Phenacogrammus interruptus) on …display more of the recent discussions
  3. Salviashaman at A guide on setting a South American blackwater stream biotope aquarium on
  4. Figureguy at Chemistry of Aquarium Water with FAQ on
  5. Jackson20 at A guide on feeding aquarium fish frozen foods on
  6. Senator Wisdom at Bloodfin tetra (Aphyocharax alburnus) on
  7. CayceR at A page and forum devoted to keeping Blood parrot cichlids on
  8. Ness at A guide on raising African Dwarf Frogs with pictures and forum on
  9. Terry Mitchell at A guide on breeding, feeding and caring for L333 Pleco on
  10. Terry Mitchell at A guide on breeding, feeding and caring for L333 Pleco on
Green terror cichlid - Aequidens rivulatus

Green terror cichlid - Aequidens rivulatus

Scientific name: Aequidens rivulatus

Common name: Green terror cichlid

Family: Cichlidae

Usual size in fish tanks: 15 - 20 cm (5.91 - 7.87 inch)


Recommended pH range for the species: 6.5 - 7.5

Recommended water hardness (dGH): 4 - 15°N (71.43 - 267.86ppm)

0°C 32°F30°C 86°F

Recommended temperature: 20 - 24 °C (68 - 75.2°F)

The way how these fish reproduce: Spawning

Where the species comes from: South America

Temperament to its own species: aggressive/territorial

Temperament toward other fish species: aggressive/territorial

Usual place in the tank: Middle levels

General information about the Green Terror Cichlid

The Green Terror Cichlid is quite often mistaken for the Blue Acara as they are closely related and can display a very similar colouration especially when juveniles. Unfortunately the Green Terror Cichlid has a much higher aggression level and will grow larger than the Blue Acara. The minimum sized aquarium to house these fish has to be at least 55 gallons in water volume, they are a very active species and are also high waste producers like most of the larger cichlids. Make sure that the filtration system used is capable of dealing with these high waste levels so it is wise to get one rated for slightly larger aquariums than the one you have to cope with the waste.

This fish is an avid digger of the substrate, if adding the Green Terror Cichlid to a planted aquarium, the plants will need to be well weighted down or in pots, only add hardy species of aquatic plants that can stand the odd knock or being moved around.


The Green terror is a cichlid and like most fish of the cichlid species, they eat nearly every kind of food. Use live food including bloodworms, small fish, beef, but feed them vegetables as much as possible. Adults should be fed 1 or 2 times a day. The fry requires food about 4-5 times a day. They are not classed as having a specific feeding level in the aquarium such as bottom feeders or top feeders, they will search for their food in all levels of the water column.


Males are much more coloured than females. Moreover, they are bigger than females. As juveniles their colouration may have a bluer tinge compared to the green tinge of the mature specimens, hence the mistaken identity in some cases with the Blue Acara.


Egg-layers. The female will clean the chosen spawning site in readiness for the eggs and once hatched both parents will protect the eggs and the fry once hatched. If stable, water conditions aren't important at all.

What do green terror fertilized eggs look like?

They should be transparent. If eggs are white, they haven’t been fertilized or they turned to fungus. The parent fish should attempt to remove any white eggs from the batch.

Do green terrors fight when they breed?

Answer: Male green terrors are very aggressive towards the females when they are in breeding mode but once they have spawned, they both make good parents.


Expected lifespan of Green terror cichlid is about 10 years; Depends on conditions heavily.


Thanks to Corey Bower for pictures of Green terror cichlid! Some pictures were bought by from Also thanks to Heather.

Green terror cichlid Green terror cichlid Green terror cichlid Green terror cichlid juvenile Green terror cichlid, image 1 Green terror cichlid, image 2 Green terror cichlid male, picture 3

Did you know?

Please, verify whether your login and password are valid. If you don't have an account here, register one free of charge, please. Click here to close this box.

You have been logged out successfully! This box will close automatically!

Something went wrong during processing your message, please try again!

Your message has been sent, thanks a lot!

Page has been saved, refresh it now, please!

The page has been created, you will now be redirected!

URL already exists!

Path to the photo is not unique!

Really delete this page from the database?

The page has been removed successfully, you will be redirected now!

The page couldn't be deleted!!

Unfortunately this page doesn't allow discussion. Please, find any other page that fits your area of interest as over 99% of our pages allow discussion. The reason why no discussion is allowed here is this page is too general. Thanks a lot for understanding! Click here to search, please!

Really delete this comment from the site?

Really delete this image from the site?

Really delete this image from the site?

Selected comment has been removed successfully!

Selected image has been removed successfully!

Either login or email address is required

Account has been recovered, please check your email for further instructions