How Big Do Jardini Arowana Get? Size Expectations, Care Tips

How Big Do Jardini Arowana Get? Size Expectations, Care Tips, and Everything You Need to Know

The Jardini Arowana, often called the Australian Arowana or Water Monkey, is a freshwater fish that demands attention. With its ancient silhouette, gleaming scales, and predatory instincts, this species is a prized choice for dedicated aquarists. But before welcoming one into your home, understanding its size, care needs, and quirks is critical. Let’s unpack what it takes to keep this aquatic marvel thriving.

Table of Contents

The Jardini Arowana: A Prehistoric Predator

Native to Northern Australia and New Guinea, the Jardini Arowana (Scleropages jardinii) has roamed rivers and wetlands for millions of years. Its streamlined body, armor-like scales, and upward-facing jaw give it a mythical appearance, earning it nicknames like “Dragon Fish” in some regions.

In the wild, these fish inhabit slow-moving rivers, flooded forests, and swamps. Their ability to leap several feet out of the water to snatch prey—often insects or small birds—has inspired the playful title “Water Monkey,” a nod to their acrobatic hunting style. Jardini arowana for sale

How Big Do Jardini Arowana Get?

Size is a top concern for prospective owners. These aren’t your average aquarium residents.

In Captivity: Most Jardini Arowanas reach 24 inches (60 cm), though exceptional individuals can grow to 30 inches (76 cm) with pristine care.
In the Wild: Unrestricted by tank walls, wild specimens often exceed 36 inches (90 cm) FishBase.

Their growth rate is staggering. Juveniles can add 2 inches per month, hitting full size in roughly 18 months. This rapid development means tank upgrades are inevitable

Tank Setup for a Growing Giant

Space isn’t optional—it’s a survival requirement.

Minimum Tank Size

Juveniles: Start with a 75-gallon tank, but plan for expansion within months.
Adults: A single adult needs 180 gallons minimum, though 200+ gallons is safer. For enthusiasts with space, a 500-gallon pond mimics their natural habitat Seriously Fish.

Tank Design

Shape: Prioritize length and width over height—these surface-dwellers need horizontal swimming space.
Security: A sealed, heavy-duty lid is non-negotiable. Jardinis are Olympic-level jumpers monsterfishkeepers.
Decor: Use sand or smooth gravel, and add driftwood or floating plants for enrichment. Avoid clutter—they need open water to patrol Aquascape Addiction.

Care Guide for a Thriving Jardini Arowana

Water Quality

Temperature: Keep between 75–86°F (24–30°C).
pH Level: Aim for 6.0–7.0 (slightly acidic).
Filtration: A robust canister filter is essential. Pair it with weekly 20% water changes to manage waste

Diet

These carnivores need variety:

Live Foods: Earthworms, shrimp, and crickets (gut-loaded for nutrition).
Frozen Staples: Bloodworms, krill, and brine shrimp.
Supplements: High-quality pellets fortified with vitamins

Avoid feeder fish like goldfish—they’re disease risks. Feed juveniles twice daily, adults once, and remove uneaten food promptly.

Tank Mates

Jardinis are territorial and will bully smaller fish. If mixing species, opt for:

Oscar Fish: Equally bold and hardy.
Plecos: Armored algae-eaters that stay out of trouble.
Clown Loaches: Fast and resilient Fishkeeping World.

Monitor aggression closely, especially during feeding.

Health Risks and Prevention

Even hardy fish face challenges:

Drop Eye: Often caused by poor water quality or collisions. Covering tank sides can reduce stress Aquarium Source.
Gill Rot: Linked to ammonia spikes. Test water weekly and maintain filtration.
Swim Bladder Issues: Overfeeding is a common culprit. Stick to measured portions PetMD.

Table: Quick Facts About Jardini Arowana

Aspect	Details
Scientific Name	Scleropages jardini
Average Size in Captivity	24 inches
Average Size in the Wild	Up to 40 inches
Lifespan in Captivity	10-20 years
Lifespan in the Wild	Up to 50 years
Minimum Tank Size	180 gallons
Ideal pH Range	6.0-7.0
Water Temperature	76°F-85°F
Diet	Carnivorous, prefers live food

Final Thoughts

The Jardini Arowana isn’t a pet—it’s a commitment. Its grandeur and primal allure come with high demands: colossal tanks, meticulous water care, and a meat-heavy diet. Yet, for those equipped to meet its needs, this living fossil offers unmatched fascination. Buy Platinum Arowana Singapore

Ready to dive in? Start with a tank that accommodates its future size, and invest in top-tier filtration. And if you’re on the fence, remember: this fish can outlive many cats and dogs, with lifespans exceeding 20 years Animal World.

Call-to-Action: Have you kept a Jardini Arowana? Share your setup tips or questions below—let’s build a community of informed aquarists!

By blending rigorous research with hands-on care strategies, this guide equips you to nurture a Jardini Arowana successfully. Now, go create a slice of prehistoric paradise in your home. Happy fishkeeping!