Scleropages Jardinii

Datasheet

General Description

The Australian Arowana, scientifically known as Scleropages Jardinii, is a species belonging to the family Osteoglossidae. It is distinguished by its smaller scale size, greater lateral scale count, and bronze base coloration. Commonly named the gulf saratoga or northern-spotted barramundi, this species is recognized for its aggressive behavior in aquarium settings.

Aquarium Setup

The Australian Arowana necessitates a spacious tank with a minimum of 680 liters. While decor is not crucial, the provision of ample swimming area is vital. Strong filtration is essential to maintain water quality, as prolonged exposure to inadequate conditions can lead to eye and gill issues. Regular water changes are mandatory. Additionally, a secure, sturdy lid is necessary as Australian Arowanas are proficient jumpers.

Behaviour

Known to consume smaller fish, Australian Arowanas can coexist with larger species like certain catfish, characins, cyprinids, knifefish, Datnioides, and select cichlids. In solitary confinement, these fish can exhibit territorial and belligerent behavior towards other arowanas. Optimal conditions for housing multiple Australian Arowanas are rare among most fish enthusiasts, making solitary living the recommended approach.

Feeding and Diet

Feeding Australian Arowanas a varied diet is crucial to prevent food addiction. Suitable foods include earthworms, mealworms, waxworms, bloodworms, prawns, mussels, and pellets. Feeding frequency varies with the fish's size, with smaller specimens benefitting from several small meals daily and larger individuals requiring a single feeding. Uneaten food should be promptly removed to uphold water quality.

Reproduction & Dimorphism

Breeding Australian Arowanas in captivity is infrequent due to space constraints; commercial breeding typically occurs in outdoor ponds. This mouthbrooding species features females caring for the fry post-hatching, with the young gradually gaining independence. Sexual dimorphism information is currently unavailable.

Habitat and Distribution

In the wild, Australian Arowanas are typically found in slow-moving or still bodies of water like streams, creeks, billabongs, and swamps. They favor clear waters with surface vegetation or overhanging branches. Their distribution spans Indonesia, Papua New Guinea, and Australia.