Queensland Lungfish

About

The Queensland lungfish (Neoceratodus forsteri) is one of the most ancient vertebrates you can keep in an aquarium, belonging to a lineage that has remained essentially unchanged for roughly 380 million years. Native to the Burnett and Mary River systems in southern Queensland, Australia, it favors deep, slow-moving or still water over mud, sand, or gravel substrates. It is a facultative air-breather, surfacing regularly to gulp air through its single lung, a modified swim bladder. And it produces a distinctive bellows-like sound when exhaling. Unlike its African relatives, it cannot aestivate through droughts, so access to oxygenated water is non-negotiable. In the wild it is an opportunistic omnivore, eating frogs, snails, worms, small fish, aquatic plants, and even fallen fruit, using electroreceptors to locate hidden prey in bottom debris. In captivity it can become surprisingly tame, but tankmates are a serious problem. This species is unpredictable and perfectly capable of biting chunks out of fish larger than itself, sometimes after tolerating them peacefully for extended periods. It should almost always be kept alone. Lifespans routinely exceed 50 years, with documented public aquarium specimens reaching their 90s. It is CITES-listed, legally protected, and captive specimens come with microchips and paperwork. Ownership is a genuine long-term commitment.