Aquarium keeping in Australia

Biosecurity and banned species

Australia has strict biosecurity laws to protect native ecosystems. Many fish, plants, and invertebrates are prohibited — including common overseas species (e.g. some cichlids, livebearers, and snails). Never import or mail order from overseas without checking federal and state rules. Only buy from licensed Australian retailers; never release anything from your tank into waterways. Fines and penalties apply for breaches.

Units: litres

Tanks and products in Australia are sold in litres. When using guides that give stocking or heater advice in gallons, convert: 1 US gallon ≈ 3.78 L. Dosing (e.g. dechlorinator) is usually in ml per litre on the bottle.

Tap water and climate

Tap water varies by region; many areas have hard, alkaline water. Always dechlorinate and test your water parameters. In hot regions, tanks can overheat — use room cooling, reduce lighting hours, or consider a chiller for sensitive species. Heaters are still needed in winter in most of Australia to keep tropical fish stable.

What you can keep

The permitted species list limits what’s available compared to the US or UK. Popular legal options include many tetras, rasboras, barbs, danios, corydoras, and some cichlids and livebearers that are approved. Check your state’s list and buy only from reputable Australian stores. Use App-aquatic to log tests and care for whatever you keep.

Quick takeaways

• Biosecurity is strict — only keep species that are legal in your state; buy locally.
• Tanks are in litres; convert from gallons when using US-based guides.
• Test tap water; in hot areas watch for overheating and consider cooling.
• Never release fish, plants, or water into the environment.