Nano Tropical Fish for Small Aquariums

Nano fish are typically small tropical freshwater species that grow to around 1–4cm in size. Despite their tiny stature, they’re full of personality and colour, making them ideal for nano tanks (generally under 60 litres).

These miniature marvels are well-suited to planted aquascapes, desktop tanks, or smaller home aquariums, and many are peaceful enough to live in groups or as part of a small community setup.

Popular nano fish species include:

• Neon Tetras

• Ember Tetras

• Galaxy Rasboras (Celestial Pearl Danios)

• Chili Rasboras

• Pygmy Corydoras

• Endler's Livebearers

• Dwarf Gourami

• Male Betta (in solo tanks or with care)

 

🐟 Want to learn more about specific nano fish species? Visit our Nano Fish Blog Section →

​

Best Tanks for Nano Fish

When choosing a tank for nano tropical fish, it’s important to provide stable water conditions, gentle filtration, and the right size for your fish population.

Recommended nano tank sizes:

• 20–60 litres is ideal for small shoals or carefully planned communities

• Consider low-flow filters and gentle lighting for planted nano aquariums

• Add live plants and natural décor to mimic their natural habitat

Browse our selection of nano aquariums, filters, heaters and accessories in our Nano Tank Essentials Collection.

​

Why Choose Nano Fish?

✔ Perfect for small spaces – Ideal for desks, kitchens, and flats
✔ Low energy use – Smaller tanks use less power and water
✔ Ideal for aquascaping – Nano tanks let your creativity shine
✔ Easy to maintain – Great for beginners and children
✔ Affordable to set up – Smaller setups cost less to start and run

​

​

Explore More

• 📖 Read Our Blog: Best Nano Fish for Beginners

• 📖 Creating a Thriving Nano Tank: Tips & Tricks

• 🛒 Shop All Nano Tropical Fish →

• 🛒 Nano Tank Kits & Equipment →

​​​