Threadfin Cichlid (Acarichthys heckelii)

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Threadfin Cichlid

Acarichthys heckelii2342.jpg
Threadfin Cichlid

Acarichthys heckelii

151 Litres (40 US G.)

11.4-12.7cm (4.5-5 ")




7.0 - 7.2

22 -25 °C (71.6-77°F)

5-15 °d

1:2 M:F

Pellet Foods
Flake Foods
Live Foods

2-6 years



Additional names

Thread-Finned Cichlid, Threadfin Cichlid, Elusive Cichlid, Heckle's Acara, Thread-Finned Acara, Thread-Finned Eartheater

Additional scientific names

Acara heckelii, Acara subocularis, Acarichthys heckeli, Acarichthys heckelli, Geophagus thayeri


Found along mainstream Amazon River in Peru, Colombia, and Brazil, including lower parts of the Putumayo, Trombetas, Negro, and Xingu rivers; lower Tocantins and Capim rivers; Branco River (Amazonas basin) in Brazil and Guyana, and the Essequibo River in Guyana.[1]


Males have longer finnage and are more vibrant in colour.

Tank compatibility[edit]

This fish can be aggressive and is quite territorial so should either be in a species tank in male/female pairs or with similar sized robust fish.


Will accept most foods including Cichlid pellets and flake as well as live/frozen food such as bloodworm and shrimp.

Feeding regime[edit]

Feed once or twice a day.

Environment specifics[edit]

Must have a soft substrate as this fish will dig, and therefore any décor needs to be secure so it can't fall and injure the fish.


A territorial Cichlid.


An attractive Cichlid with an oval body shape and lateral compression. It has a pointed snout, rounded caudal fin and pointed dorsal and anal fins. The dorsal, caudal and anal fins has extended rays, more evident in males, giving it their common name. It is pale in colour with iridescent scales in blue, red and silver, they have a darker spot into the middle of their flanks on either side.



Pair nest-building:


  1. Fishbase (Mirrors: Icons-flag-us.png) Distribution

External links[edit]