Australian Bass

The Australian Bass is one of the most sought-after native freshwater sportfish of Australia, now available to dedicated aquarists who appreciate a sleek, intelligent predator with subtle bronze-olive coloration and a fighting spirit that belies its modest size. Macquaria novemaculeata inhabits the coastal rivers and estuaries of eastern Australia, from Queensland south to Victoria, where it navigates between freshwater and brackish environments during its life cycle. The Fish Collection sources our Australian Bass from licensed aquaculture facilities that produce specimens adapted to fully freshwater aquarium conditions, eliminating the brackish transition challenges that complicate wild-caught fish.

The Australian Bass lacks the neon flash of many tropical species, but what it offers instead is a refined, understated beauty combined with remarkable intelligence and behavioral complexity. The body is a deep olive-bronze that shifts to silver on the flanks, with a subtle golden sheen under sidelighting. The fins are lightly tinted with amber. The overall impression is of a fish perfectly adapted to its environment — streamlined, alert, and quietly powerful. Australian Bass are visual hunters that track movement with precision, and feeding time reveals a strike speed and accuracy that surprises keepers accustomed to slower-paced tropical species.

Tank requirements reflect the species' active nature. A minimum 100-gallon aquarium is recommended for a single adult that reaches 10 to 14 inches in captivity. Groups require significantly larger systems. The tank should provide open swimming areas combined with rock and wood structure that creates current breaks and territory markers. Moderate to strong water flow from powerheads or a well-designed return system mimics the flowing rivers of the species' native habitat and encourages natural behavior.

Water parameters are notably flexible, reflecting the species' euryhaline nature. Temperature between 64 and 77 degrees Fahrenheit — cooler than most tropical species — with pH between 6.5 and 8.0 and soft to hard water. Australian Bass tolerate a remarkably wide range of conditions, though they show best color and activity levels in clean, well-oxygenated water at moderate temperatures. They are an excellent choice for unheated or mildly heated aquariums in temperate climates.

Diet is carnivorous with an emphasis on live and frozen foods. Offer market shrimp, silversides, earthworms, crickets, and high-quality sinking pellets. Our specimens accept pellets readily. Australian Bass are enthusiastic feeders that strike with impressive speed and precision. Feed every other day for adults, daily for juveniles. Overfeeding leads to water quality issues in the closed system of an aquarium, so portion control is important.

The Fish Collection ships Australian Bass in insulated, temperature-controlled containers with our live arrival guarantee. Import documentation accompanies every shipment.