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Aequidens chimantanus

Oscar
Aequidens chimantanus
Image Credit: Stawikowski, Rainer

Introduction



Aequidens chimantanus is a medium sized fish of about 4.5 " found in South America, Venezuela.


Taxonomy

(Click for details of Cichlid taxonomy)

Aequidens chimantanus was first described by Inger in 1956, and has been placed in Genus Aequidens under subfamily Cichlasomatinae.
The Genus name "Aequidens" is derived from Latin words, equips+equal+dens(teeth), which roughly translates to "Fish with equal teeth".



Description

Aequidens chimantanus has a body which is is strongly compressed laterally and relatively deep with a steep front, and tapering posterior to the head.
The scales of the head, especially those before dorsal fins are covered with thick skin, and are all cycloid, even the chest and anterior dorsal side scales are cycloid, which is unique among Aequidens species.
There is no cheek spot or other suborbital markings.
E1 ray count is 23 instead of 25 in other species of Aeqdines.
It is known to live for 8-10 years.



Distribution & Habitat

Aequidens chimantanus is found in Río Caroní head streams south from Cerro Ayán-tepui, Venezuela, South America. It is benthopelagic or swims above river bed at depths of about 1-3 m in clear water streams.




Keeping in Aquarium



Diet

It has a carnivorous diet and eats small insects and fish in nature.


Aquarium Requirements

Aequidens chimantanus has not been studied in detail yet, and not much information is available on its aquarium requirements.
They need soft water and acidic water with a pH of 4.5-5.5.
The species live in tropical South American rivers and the recommended water temperature in the aquarium is 21-28°C / 70-83°F



Species Snapshot

Species Card


Particulars Details
Scientific Name Aequidens chimantanus
Common Name Chusco
Genus Aequidens
Subfamily Cichlasomatinae
Geographical Origin Caroní River basin in Orinoco River drainage, Venezuela
Diet Carnivore
Gender Differences Dimorphic
Breeding Substrate Spawner
Temperament Aggressive.
Con Specific Temperament Aggressive.
Water hardness Soft, ph range 4.5 to 5.5
Difficulty Level in Aquariums 2


Morphometric Data


Particulars Details
Total Length(inches) 5.35
Standard Length(inches) 4.10

Measurements as % of Total Length


Particulars Details
Body Depth 23.50 %
Head length 26.50 %
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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