Threadfin Acara Cichlid (Acarichthys heckelii)
The Threadfin Acara is yet another New World cichlid that is relatively peaceful, grows to a manageable size, and displays incredible coloration and finnage as it matures!
The Threadfin Acara Cichlid (Acarichthys heckelii) is a favorite among many cichlid enthusiasts due to its generally peaceful disposition and vivid coloration as it matures. Adults have high amounts of iridescent blue-green and bright yellow markings along with red, orange, and violet highlights, especially in males. This Amazon native can often be kept in community tanks with other non-aggressive fish.
| Species | Scientific Name | Origin | Adult Size |
|---|---|---|---|
| Threadfin Acara Cichlid | Acarichthys heckelii | Amazon Basin | 4-5 inches |
FAQ
What is the typical size of a Threadfin Acara Cichlid when mature?
Adult Threadfin Acara Cichlids grow to a size of 4 to 5 inches.
Are Threadfin Acara Cichlids suitable for community tanks?
Yes, they are generally peaceful and can be kept in community tanks with non-aggressive fish.
How does the coloration of Threadfin Acara Cichlids develop over time?
The coloration becomes more vivid as the fish matures, with males displaying iridescent blue-green, bright yellow, red, orange, and violet highlights.




Max Morgan –
My Threadfin Acara has been thriving in a 20-gallon tank for six months. It’s very active and shows beautiful color changes as it grows. The fish is calm and doesn’t bother other tank mates. Great choice for beginners looking for a colorful, peaceful cichlid.
Donna Kerr –
The fish arrived healthy and active. It has adapted well to the tank conditions. The coloration is impressive, especially the yellow and blue-green shades. I appreciate the clear description of its peaceful nature.
Lisa Glover –
I bought this for my first cichlid setup. It’s easy to care for and very colorful. The fish swims gracefully and seems happy in the tank. I’m happy with the purchase and would recommend it to others.