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Thread-finned cichlid - Acarichthys heckelii

Thread-finned cichlid - Acarichthys heckelii

Scientific name: Acarichthys heckelii

Common name: Thread-finned cichlid

Family: Cichlidae

Usual size in fish tanks: 11 - 13 cm (4.33 - 5.12 inch)


Recommended pH range for the species: 6.8 - 7.2

Recommended water hardness (dGH): 6 - 12°N (107.14 - 214.29ppm)

0°C 32°F30°C 86°F

Recommended temperature: 24 - 28 °C (75.2 - 82.4°F)

The way how these fish reproduce: Spawning

Where the species comes from: South America

Temperament to its own species: peaceful

Temperament toward other fish species: aggressive/territorial

Usual place in the tank: Bottom levels

Food and feeding

All foods offered will be accepted. Quality flakes and cichlid pellets should provide the staple diet. Supplements of blood worm and brine shrimp should be given on a weekly basis. Include some vegetable matter to bring out the best from Thread-finned cichlids.


South America; Thread-finned cichlids are to be found on the Rio Negro, Brazil.


Males will have an extended dorsal fin and display more coloration.


Breeding is not too difficult with these fish. Provide some caves in the set up and they should spawn. The male will protect the spawning site while the female tends the eggs in the cave. After 3 days the eggs should hatch and 3 days later the fry will be free swimming. They can be fed on newly hatched brine shrimp initially.


The expected life span for Thread-finned cichlids is 6-8 years.

Short description

These are relatively peaceful fish but will occupy territories. Add hiding places to the tank but leave open swimming spaces. Frequent water changes must be performed.


Bought by from

Thread-finned cichlid

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