Introduction

Choosing the right fish is the most important step when starting an aquarium.

Many beginners make the mistake of buying fish that are too sensitive or aggressive, which often leads to problems, stress, and fish loss.

This guide will help you choose hardy, easy-to-keep fish that are perfect for beginners in the UK.

What Makes a Fish Beginner-Friendly?

Beginner fish should be:

• Hardy and adaptable to different water conditions
• Peaceful and suitable for community tanks
• Easy to feed and maintain
• Widely available in the UK

Best Fish for Beginners

Guppies

Guppies are one of the easiest fish to keep. They are colourful, active, and very adaptable.

Neon Tetras

Small, peaceful fish that do well in groups. Perfect for community aquariums.

Zebra Danios

Extremely hardy and ideal for beginners. They tolerate a wide range of conditions.

Mollies

Easy to care for and available in many varieties. Suitable for most beginner tanks.

Platies

Low maintenance and very peaceful. Great for smaller aquariums.

Fish to Avoid as a Beginner

Some fish are not suitable for beginners:

• Discus (require very stable water conditions)
• Large cichlids (can be aggressive)
• Marine fish (more complex setup)

Tank Size Matters

Avoid very small tanks.

A 60 litre aquarium is a good starting point because it is easier to maintain stable water conditions.

If you’re planning a smaller setup, see this guide >>>

Where to Buy Aquarium Fish in the UK

Once your tank is ready, you can explore available fish here >>>

FAQ

What is the easiest fish to keep?
Guppies and danios are among the easiest.

How many fish should I start with?
Start with a small number and increase gradually.

Can I mix different species?
Yes, but always check compatibility.

Final Tip

Start simple. A well-planned aquarium with beginner-friendly fish will save you time, money, and frustration.