Best Fish for Beginners in Australia (Easy Fish to Start Your Aquarium)

Starting your first aquarium is exciting, but choosing the right fish makes all the difference.

Many beginner fishkeepers unknowingly pick species that are too delicate, too aggressive, or require specialised care. The good news is there are plenty of hardy, beginner-friendly fish that are perfect for learning the basics of aquarium keeping.

In this guide, we’ll cover some of the best fish for beginners in Australia, including colourful community fish that are hardy, peaceful, and relatively easy to care for.

What Makes a Fish Good for Beginners?

Before choosing your first fish, it helps to understand what makes a species beginner friendly.

The best beginner fish usually:

• Adapt well to a range of water conditions
• Are peaceful in community aquariums
• Are hardy and forgiving of small mistakes
• Eat a wide variety of foods
• Don’t require specialised care

Fish with these traits make it easier for new hobbyists to build confidence and learn aquarium maintenance routines.

6 Best Fish for Beginner Aquariums in Australia

Here are some of the most popular and reliable beginner fish for freshwater aquariums.

1. Guppies

Guppies are one of the most popular beginner fish in the world, and for good reason.

These small livebearers are incredibly colourful, active, and easy to care for. They adapt well to a variety of aquarium conditions and are a great choice for community tanks.

Why guppies are great for beginners:

• Extremely hardy
• Bright colours and flowing fins
• Peaceful community fish
• Easy to feed

Guppies can also reproduce easily, which many beginner aquarists find fascinating to observe.

2. Tetras (Great Schooling Fish)

Tetras are a fantastic option for beginner aquariums, especially if you want a lively and colourful tank.

These small schooling fish are best kept in groups of 6 or more, which allows them to display their natural behaviour.

Popular beginner tetra species include:

• Neon Tetras
• Cardinal Tetras
• Black Neon Tetras
• Glowlight Tetras

Why tetras are beginner friendly:

• Peaceful and community-safe
• Beautiful schooling behaviour
• Small size makes them ideal for medium tanks
• Easy to feed and maintain

A school of tetras adds movement, colour, and life to almost any aquarium setup.

3. Platies

Platies are another fantastic beginner fish that are hardy, peaceful, and very adaptable.

They come in a variety of colours including orange, red, yellow, and patterned varieties.

Why platies are ideal for beginners:

• Very hardy fish
• Peaceful community species
• Active and entertaining to watch
• Easy to care for

Like guppies, platies are livebearers and may occasionally produce fry in a healthy aquarium.

4. Corydoras Catfish

Corydoras are small bottom-dwelling fish that help keep the aquarium substrate tidy.

They are extremely peaceful and should be kept in groups of at least 4–6.

Why Corydoras are great for beginners:

• Gentle temperament
• Interesting bottom-dwelling behaviour
• Help clean leftover food
• Very hardy

They also have a charming personality and are often seen darting around the tank together in groups.

5. Zebra Danios

Zebra Danios are among the hardiest freshwater fish available, making them excellent for beginners.

They are active swimmers and thrive in schools.

Why Zebra Danios are beginner-friendly:

• Extremely hardy
• Adaptable to different water conditions
• Energetic and fun to watch
• Peaceful community fish

Their striped pattern and constant movement add energy to a community aquarium.

6. Cherry Barbs

Cherry Barbs are a colourful and peaceful species that works beautifully in planted aquariums.

Males develop a deep red colour, especially when comfortable and healthy.

Why Cherry Barbs are great for beginners:

• Peaceful temperament
• Easy to care for
• Stunning colouration
• Suitable for community tanks

They also pair well with tetras, Corydoras, and other peaceful fish.

Beginner Fishkeeping Tips

Choosing the right fish is just one part of building a successful aquarium.

Here are a few key tips for beginners.

Start With a Properly Cycled Tank

Before adding fish, your aquarium should complete the nitrogen cycle, which allows beneficial bacteria to establish.

This helps convert harmful ammonia into safer compounds.

Don’t Overcrowd Your Aquarium

Adding too many fish at once can overwhelm the biological filtration system.

Start slowly and gradually increase stocking over time.

Perform Regular Water Changes

Most aquariums benefit from 20–30% weekly water changes to maintain healthy water conditions. See our water change guide for more info.

Consistent maintenance keeps fish happy and reduces algae.

Choose Compatible Fish

Peaceful community species generally do best together. Avoid mixing aggressive or territorial fish in beginner aquariums.

Visit or Shop Online at Newtown Aquarium for Beginner Fish

If you’re starting your first aquarium, the team at Newtown Aquarium is always happy to help.

We can assist with:

• Choosing the best fish for beginners
• Aquarium setup advice
• Water testing and maintenance tips
• Plants and aquascaping inspiration

Starting with the right fish makes the hobby far more enjoyable - and sets your aquarium up for long-term success.