Monday,26 July 2021, 4 : 39 PM

Aequidens viridis

Aequidens viridis
Image Credit: wikipedia


Aequidens viridis is one of the larger fish in its genera with a standard length of 6.5 ω and total length of 7.2 ".


(Click for details of Cichlid taxonomy)

Aequidens viridis was first described by Heckel in 1840 and is placed in Genus Aequidens and subfamily Cichlasomatinae.
The Genus name "Aequidens" is derived from Latin words, aequus+equal+dens(teeth), which roughly translates to "Fish with equal teeth".


Aequidens viridis is one of the larger fish with standard length(from tip of snout to begining of tail fin) about 6.5 ".
It is known to live for 8-10 year.
It is a carnivorous in nature, and eats small fish, deitrus.

Distribution & Habitat

Aequidens viridis is found in Bolivia and Brazil, Guaporé River basin, Amazon River basin.
It is benthopelagic or swims above river/stream bed at depths of about 1-3 m in black water rivers.

Keeping in Aquarium

The fish is found in Bolivia and Brazil, Guaporé River basin,. with a ph of 4.5-6 and dh range 3-9.

Tank Size and setup:

Aequidens viridis is a moderate sized fish and should be kept in a aquarium of about 300 liters with good filtration.
A sand bed of fine sand and many shelters with rocks and driftwood are ideal for this fish.
They are aggressive towards other species as well towards their own species.
At breeding time the aggression increases.
Small fish should not be kept with them as it will be eaten.


Aequidens viridis are dimorphic, and reach sexual maturity in about 9-11 months.
They lay eggs on flat surfaces and practice brood care.
Both parents take care of eggs and larvae.
The females are smaller and will clean a piece of flat rock and lay 300 eggs.
The eggs will hatch after 2-3 days and fry will be free swimming within a week.
Fry can be fed brine shrimp.
The pair will be ready to breed again if the fry are removed early.

Species Snapshot

Species Card

Particulars Details
Scientific Name Aequidens viridis
Common Name Golden acara
Genus Aequidens
Subfamily Cichlasomatinae
Geographical Origin Guaporé River basin, Amazon River basin
Diet Carnivore
Gender Differences Dimorphic
Breeding Substrate Spawner
Temperament Mildly aggressive
Con Specific Temperament Mildly aggressive
Water hardness Medium to hard dh range 10-25
Difficulty Level in Aquariums 3

Morphometric Data

Particulars Details
Total Length(inches)
Standard Length(inches)

Measurements as % of Total Length

Particulars Details
Body Depth  %
Head length  %
Pre Dorsal length  %
Pre Pectoral length  %
Pre Anal length  %
Pre Pelvic length  %
Caudal Peduncle Depth  %
Caudal Peduncle Length  %
Fork length  %
Length of Last Dorsal Fin Spine  %
Pectoral Fin Length  %
Pelvic Fin Length  %

Measurements as % of Head Length

Particulars Details
Head Width  %
Snout length  %
Eye diameter  %
Pre Orbital Length  %
Inter Orbital Width  %
Pre Orbital Depth  %

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