Australians love their pets – from colourful fish and turtles to exotic birds, reptiles, and aquarium plants. But animals and plants that come from other parts of the world can cause serious harm if they escape or are released into the wild. Once established, these species can outcompete native wildlife, spread disease, and disrupt entire ecosystems. As pet owners, we all share a responsibility to prevent this from happening.

Why is it a problem?

Australia’s unique wildlife has evolved in isolation, which makes it especially vulnerable to new species. When a non-native animal or plant is released, it may have no natural predators or controls here, allowing it to spread rapidly.

A well-known example is the red-eared slider turtle, once sold widely as a pet. Many owners released them into local ponds and rivers when they grew too large. These turtles now threaten native turtles and waterbirds by competing for food and basking sites.

Aquarium fish and plants can also cause major issues. Species such as goldfish and cabomba have escaped into waterways, where they damage habitats, stir up sediment, and choke native vegetation. Even tiny snails or plant fragments from an aquarium can start a new infestation.

What does the law say?

It is illegal to release any animal or plant into the wild in Australia without a permit. This includes pets, aquarium species, and garden plants. Penalties vary by state and territory but can include heavy fines.

The Department of Agriculture, Fisheries and Forestry and state environment agencies maintain lists of prohibited and invasive species. These lists identify which animals and plants cannot be kept, traded, or released. Always check the rules in your state before buying or rehoming a pet.

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What if you can’t keep your pet?

Sometimes circumstances change – a pet grows too large, becomes difficult to care for, or you have to move. But releasing it into the wild is never the answer.

Here are safer and more responsible options:

• Contact a local animal shelter or rescue group – many can help rehome unwanted pets.
• Ask your pet shop or breeder – some will take animals back or help find new owners.
• Reach out to online pet communities that focus on responsible rehoming.
• If the animal is sick or cannot be rehomed, seek advice from a veterinarian about humane options.

Whatever you do, never release your pet or its offspring into the environment.

Be careful with aquarium water and plants

Even water from an aquarium can contain eggs, larvae, or plant fragments that survive outdoors. When cleaning your tank, pour the water down the sink or toilet, not into the garden, stormwater drain, or local creek.

Dispose of unwanted plants, gravel, and decorations in household rubbish, not compost or green waste, where they might spread.

Think ahead before you buy

Prevention starts before you bring a new pet home. Ask yourself: How big will it get? How long will it live? Can I meet its needs for the long term? Many problems arise because owners underestimate the commitment involved.

• Research the species thoroughly before buying.
• Purchase only from licensed, responsible sellers.
• Avoid species listed as invasive or restricted in your state.

Choosing wisely helps protect both your pet and Australia’s natural environment.

A shared responsibility for nature

Owning a pet is about more than caring for one animal – it’s about respecting the environment we all depend on. Every time we prevent a non-native species from escaping, we help safeguard Australia’s unique ecosystems and the wildlife that belongs here.

A little care and awareness go a long way – and make a big difference for our shared future.