Easy
Topaz Blue Shrimp (Neocaridina davidi)
18–28°C · pH 6.5–8 · 20L
£17.99
Nano Tank Fish for Sale UK
Best nano tank fish for UK aquariums — species that thrive in tanks under 40 litres. Micro schoolers, dwarf species, shrimps.
Shop current stock242 live listings
- Check the listing for the exact sale unit and current price
- Match adult size, water needs and social behaviour
- Prepare a fully cycled aquarium before arrival
Current delivery and offer information
Follow each link for the latest terms before ordering.
Current Nano Tank Fish listings
242 products
Easy
Sun Nerite Snail (Neritina sp.)
22–28°C · pH 7–8.5 · 10L
£3.99
Moderate
Yellow Spotted Rabbit Snail (Tylomelania sp.)
26–30°C · pH 7.5–8.5 · 40L
£18.99
Easy
Glowlight Rasbora (Trigonostigma hengeli)
23–28°C · pH 6–7.5 · 60L
£3.99
−12%
Easy
Halfmoon Plakat Male Betta (Betta splendens)
24–30°C · pH 6–8 · 20L
£20.23£22.99
Easy
Green Moscow Male Guppy (Poecilia reticulata)
22–28°C · pH 7–8 · 60L
£5.99
Easy
Yellow Neon Shrimp (Neocaridina davidi)
18–28°C · pH 6.5–8 · 20L
£10.99
Moderate
Crowntail Female Betta (Betta splendens)
25–28°C · pH 6.5–7.5 · 40L
£9.99
Easy
Malaysian Trumpet Snail (Melanoides tuberculata)
22–28°C · pH 6.8–8.2 · 20L
£2.99
Easy
Blue Jelly Shrimp (Neocaridina davidi)
18–28°C · pH 6.5–8 · 20L
£19.99
−12%
Moderate
Meleagris Shell-Dweller (Neolamprologus stappersi)
24–28°C · pH 7.8–9 · 60L
£16.71£18.99
−14%
Moderate
Green Neon Tetra (Paracheirodon simulans)
23–27°C · pH 5.5–6.5 · 60L
£6.01£6.99
Easy
Mixed Nerite Snails (Neritina sp.)
22–28°C · pH 7–8.5 · 10L
£3.99
Easy
El Tigre Endler Male (Poecilia wingei)
22–28°C · pH 6.8–8.5 · 40L
£6.99
Easy
Red Honey Gourami (Trichogaster chuna)
22–28°C · pH 6–7.5 · 40L
£8.99
Moderate
Least Rasbora (Boraras urophthalmoides)
22–28°C · pH 5–7.5 · 40L
£2.99
Moderate
Orange Rili Shrimp (Neocaridina davidi)
17–27°C · pH 6.5–8 · 20L
£12.99
Moderate
Orange Rabbit Snail (Tylomelania sp.)
25–28°C · pH 7.5–8.5 · 60L
£19.99
−14%
Moderate
Blue Ocellated Shell-Dweller (Lamprologus ocellatus)
23–25°C · pH 8–9 · 75L
£16.33£18.99
Easy
Blue Velvet Shrimp (Neocaridina davidi)
18–28°C · pH 6.5–8 · 20L
£14.99
Easy
Yellow Cherry Shrimp (Neocaridina davidi)
18–28°C · pH 6.5–8 · 20L
£11.99
Easy
Koi Double Tail Plakat Male Betta (Betta splendens)
24–30°C · pH 6–7.5 · 20L
£40.99
Moderate
Neon Tetra (Paracheirodon innesi)
20–26°C
£2.99
Moderate
Black Antenna Rabbit Snail (Tylomelania sp.)
25–28°C
£17.99
Before you choose from this collection
This page collects the small, peaceful species that suit nano aquariums — tanks roughly 10 to 40 litres. Everything listed is live stock held in our own system, dispatched with a licensed live-animal courier under our live arrival guarantee.
Nano fish stay small their whole lives and are calm enough for a compact, planted tank: chili and mosquito rasboras, celestial pearl danios, Endlers, ember tetras, sparkling gouramis, pygmy corydoras and dwarf shrimp all thrive at this scale.
The key with nano tanks is restraint — a small volume swings in temperature and chemistry faster than a big one, so stock lightly and keep on top of water changes. Read the nano notes linked below before ordering to plan a group that won't outgrow or overload the tank.
Explore related collections
Visual route into our wider UK live-fish range.
Beginner Fish
The best tropical fish for beginners UK — hand-picked easy-care species that thrive with minimal fuss. Perfect starter community tank candidates.
Community Tank Fish
Peaceful tetras, rasboras, corydoras, platies and gouramis chosen to live together — temperament, adult size and water range per listing so the mix works.
Planted Tank Fish
Planted-tank fish for sale UK — peaceful, plant-safe species that showcase aquascaped layouts. Tetras, rasboras, dwarf cichlids, shrimps.
Algae Eaters
Best algae eaters for sale UK — Bristlenose Plecos, Otocinclus, Siamese Algae Eaters, Nerite Snails, Amano Shrimp.
Bottom Dwellers
Bottom dweller fish for sale UK — Corydoras, Loaches, Plecos, Synodontis. Cleanup crew for the aquarium substrate.
Schooling Fish
Tetras, rasboras, barbs, danios and rainbowfish in shoal-friendly quantities — these species only settle in groups of six or more. Group prices per listing.
Centerpiece Fish
Centerpiece fish for sale UK — large, attention-grabbing species that anchor a display tank. Oscars, Discus, Angelfish, Arowanas, Severums.
Rare & Collector Fish
Buy exotic fish online UK — L-number plecos, wild-caught Apistogramma, altum angelfish, rare cichlids and collector livebearers. Live arrival guarantee.
Frequently asked questions
Genuinely small species that stay under a few centimetres: chili and mosquito rasboras (Boraras), celestial pearl danios, ember tetras, Endlers, sparkling and honey gouramis, pygmy corydoras and dwarf shrimp. These stay small for life — never a juvenile of a fish that grows large. Match the shoal size to the tank's litres.
Fewer than a bigger tank per litre, because small volumes are less stable. As a rough guide a well-planted, well-filtered 30-litre nano might hold a single small shoal of 8-10 tiny fish plus a few shrimp. Understock rather than overstock — it keeps water parameters steady and the fish healthier.
Most nano species start at about £2-£5 each, with rarer micro-fish and higher-grade shrimp a little more. As they're bought in small shoals, budget for the group rather than a single fish. Prices on this page are live: what you see is what's in stock today.
Yes — tropical nano fish still need stable warmth and filtration. Small heaters (25-50 W) and gentle nano filters or sponge filters are made for exactly these tanks. If anything, filtration matters more in a nano because the small water volume gives less margin for error.
Absolutely — nano tanks are ideal for dwarf shrimp like cherry and Neocaridina, either alone or with tiny peaceful fish. In a shrimp-only nano a colony breeds readily. If you add micro-fish, choose the smallest, most peaceful species so baby shrimp have a chance to survive among the plants.
Yes. Small nano species ship comfortably in oxygen-charged, insulated packaging with a winter heat pack, carried midweek by a licensed live-animal courier. Dispatch is Wednesday for a short transit window, and every order carries our photo-proof live arrival guarantee.
Watch: Nano Tank Fish in 60 seconds
Short clips from our own channel — the things keepers most often get wrong, answered in a minute.
Keep exploring
Shop related
- Beginner Fish
The best tropical fish for beginners UK — hand-picked easy-care species that thrive with minimal fuss. Perfect starter community tank candidates.
- Community Tank Fish
Peaceful tetras, rasboras, corydoras, platies and gouramis chosen to live together — temperament, adult size and water range per listing so the mix works.
- Planted Tank Fish
Planted-tank fish for sale UK — peaceful, plant-safe species that showcase aquascaped layouts. Tetras, rasboras, dwarf cichlids, shrimps.
- Algae Eaters
Best algae eaters for sale UK — Bristlenose Plecos, Otocinclus, Siamese Algae Eaters, Nerite Snails, Amano Shrimp.