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Library > Cichlids > General Articles > Taxonomy of Cichlids > Sub Family cichlasomatiene > Genera Aequidens> Aequidens potaroensis
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Species Aequidens potaroensis  
Scientific classification
Kingdom : Animalia
Phylum : Chordata
Class : Actinopterygii
Order : Perciformes
Suborder : Labroidei
Family : Cichlidae
Sub Family : cichlasomatiene
Genus : Aequidens
Scientific Name : Aequidens potaroensis
Common Name : Aequidens potaroensis
Geo Origin : AMERICA, South America, Essequibo River basin, Guyana
Diet : Carnivore
Gender Differences : Dimorphic
Breeding : Substrate Spawner
Temperament : Aggessive
Con specific Temperament : Mildly Aggressive
Standard Length : 4"
Total Length : 5.5"
Water Hardness: Soft, dh range 3-9
Difficulty ; 3


It is a medium size fish of about 4 " found in Essequibo River basin, Guyana, South America.


It was first described by Eigenmann, 1912 is placed in Genus Aequidens and subfamily Cichlasomatinae.

The Genus "Aequidens" is derived from Latin words, aequus+equal+dens(teeth), which roughly translates to "Fish with equal teeth".

Distribution & Habitat:

It is found in South america, Essequibo River basin, Guyana.

A. potaroensis has been collected from fast flowing black water streams.

It is benthopelagic or swims above river/stream bed at depths of about 1-3 m in black water rivers.


It is a carnivorous in nature, and eats small fish, deitrus .
Hence it should be given similar diet in aquariums.



It is medium fish with standard length(from tip of snout to begriming of tail fin) about 4 ".

A. potaroensis has a typical tri serial pre dorsal arrangement of scales of Aequidens with E1 scales 25 or 26.

It is known to live for 8-10 years.


Water Parameters:

It is found in black water streams of Essequibo River basin, Guyana, with a ph of 4.5-6 and dh range 3-9.

Tank Size and setup:

A. Pallidus are medium 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.

Tank Mates:

They are not very aggressive but can be very aggressive to others of same species. At breeding time the aggression increases.

Small fish should not be kept with them as it will be eaten.

They can be kept with Oscars, Rocio etc.


A. potaroensis 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 500-600 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.





  Sandeep Raghuvanshi
Picture Credits   Wikipdeia and other sources which have releases under GNU, unless specifically credited
Citations/Further Reading  

Froese, R. and D. Pauly. Editors. 2011.FishBase. World Wide Web electronic publication., ( 10/2013 )

Kullander, S. O., 2003. Cichlidae (Cichlids). p. 605-654. In R. E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America.

A new Aequidens species from the Rio Trombetas, Brasil, and redescription of Aequidens pallidus (Teleostei, Cichlidae) 1. SVEN O. KULLANDER1, 2. EFREM J. G. FERREIRA2