Threadfin Acara

Threadfin Acara

Acarichthys heckelii

Also known as: Heckel's Acara

💧 Freshwater ⚡ Semi-aggressive 🟡 Moderate 🍽️ Omnivore

A distinctive eartheater with dramatically elongated dorsal and pelvic fin filaments. Iridescent body with a large dark lateral spot.

Tank Size

55 gal
minimum (75+ preferred)

Temperature

76–84°F
24–29°C

pH Range

5.5–7.5
water acidity

Max Size

8"
20.3 cm

Lifespan

8–12 years
typical in captivity

Swim Level

Bottom
preferred zone

Care Notes

Needs sand substrate for sifting. Relatively peaceful but can be assertive during spawning. Provide open swimming space.

Feeding

Sinking pellets, frozen bloodworms, brine shrimp, and daphnia. Sifts substrate constantly.

Compatible Tank Mates

None identified.

Use Caution With

Cardinal Tetra 2" Rummy Nose Tetra 2" Black Skirt Tetra 2.5" Serpae Tetra 1.75" Congo Tetra 3.5" Harlequin Rasbora 2" Zebra Danio 2" Bloodfin Tetra 2" Diamond Tetra 2.5" Buenos Aires Tetra 3" Scissortail Rasbora 3.5" X-Ray Tetra 1.75"

Incompatible With

Neon Tetra 1.5" Ember Tetra 0.8" Glowlight Tetra 1.5" Chili Rasbora 0.7" Celestial Pearl Danio 1" White Cloud Mountain Minnow 1.5" Lemon Tetra 1.5" Black Neon Tetra 1.5" Green Neon Tetra 1" Flame Tetra 1.5" Red Phantom Tetra 1.5" Espei Rasbora 1.5"

Check Compatibility

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