The Threadfin Acara (Acarichthys heckelii) is a stunning South American cichlid prized for its long, elegant fins and iridescent silver-blue body with subtle gold highlights. Growing up to 6 to 8 inches, this species is both peaceful and regal, making it an excellent addition to medium to large community aquariums. Threadfin Acaras thrive in tanks with sandy substrates, driftwood, and plenty of plants, where their flowing fins and delicate movements can be fully appreciated. They are relatively easy to care for, as long as their tankmates are calm and their environment replicates their natural habitat. With proper care, these majestic fish can live for 5 to 7 years, becoming a true centerpiece in any aquarium.
 
Water Parameters for Threadfin Acara
Parameter
Preferred Range
Temperature
75°F – 82°F (24°C – 28°C)
pH Level
6.0 – 7.5
Water Hardness
Soft to Moderately Hard (2 – 15 dGH)
Tank Size
Minimum 55 gallons
Water Flow
Moderate