Green Neon Tetra Care Guide
The Green Neon Tetra (Paracheirodon simulans) is a small, peaceful freshwater fish popular among UK aquarists. Often mistaken for the more common Neon Tetra, the Green Neon Tetra displays a vibrant iridescent green-blue stripe and is particularly prized by aquascapers for its stunning appearance in planted aquariums.
In this guide, you'll learn everything you need to know about Green Neon Tetra care, including tank size, water conditions, compatibility, feeding, and typical UK prices - plus how to buy or sell them locally.
Quick facts about Green Neon Tetras
Green Neon Tetras are native to the blackwater streams of the Amazon Basin. They are slightly smaller and often considered more delicate than standard Neon Tetras, but their brilliant metallic coloration makes them one of the most attractive shoaling fish available.
They thrive in large groups and heavily planted aquariums.
Paracheirodon simulans
2-3 cm
Brazil, Colombia, and Venezuela
45L (10gal)
3-5 years
Peaceful, schooling
24-30°C
Omnivore (micro pellets, flakes, frozen and live foods)
4.5-7.0
£2-£5 per fish
How Many Green Neon Tetras Should You Keep?
Green Neon Tetras are shoaling fish and should always be kept in groups.
- A minimum group of 8-10 is recommended
- Larger shoals display more natural behaviour and confidence
- Groups of 15-20 create a particularly impressive display in planted aquariums
Keeping too few can lead to:
- Stress and nervous behaviour
- Faded colours
- Increased susceptibility to illness
They are most comfortable when surrounded by their own kind.
Ideal Tank Conditions for Green Neon Tetras
Providing the right environment helps Green Neon Tetras display their best colours and natural behaviour.
- Tank Setup: Heavily planted aquarium with open swimming space
- Substrate: Dark substrate enhances colouration
- Plants & Decor: Dense planting, driftwood, leaf litter, and shaded areas
- Water Conditions: Soft, slightly acidic freshwater
- Filtration & Flow: Gentle filtration with low to moderate flow
- Lighting: Dim to moderate lighting preferred
They thrive in mature aquariums with stable water parameters.
Compatibility with Other Fish
Green Neon Tetras are peaceful and ideal for community aquariums.
- Good Tankmates: ember tetras, cardinal tetras, chili rasboras, sparkling gouramis, pygmy corydoras, kuhli loaches, and cherry shrimp
- Avoid: large cichlids, aggressive fish, and species large enough to view them as food
Their small size makes them best suited to peaceful communities.
Are Green Neon Tetras Easy to Care For?
Green Neon Tetras are moderately easy to care for and suitable for aquarists with some experience.
They require:
- Stable water conditions
- Soft, clean water
- Appropriate shoal sizes
- Peaceful tankmates
They can be more sensitive to poor water quality than some other tetra species.
Green Neon Tetra Price in the UK
In the UK, Green Neon Tetras typically cost between £2-£5 per fish.
Prices vary depending on:
- Size and quality
- Availability
- Shop vs hobbyist breeders
They are often slightly less common than standard Neon Tetras.
Where to Buy Green Neon Tetras in the UK
Green Neon Tetras are available from many aquarium shops and specialist tropical fish retailers.
Sourcing fish locally can:
- Reduce transport stress
- Allow you to inspect health and colouration
- Offer better value
TankMate UK helps connect fishkeepers who want to buy, sell, or rehome fish safely - without shipping.
Can You Sell Green Neon Tetras?
Yes - Green Neon Tetras are occasionally bred and sold by hobbyists.
Selling locally is often the best option, as it:
- Minimises stress for the fish
- Avoids the risks of shipping
- Connects you with local aquarists
TankMate UK allows you to list fish quickly and find local buyers.
Feeding Green Neon Tetras
Green Neon Tetras are omnivorous and easy to feed.
Key Tips
- Feed high-quality micro pellets or crushed flakes
- Supplement with frozen daphnia, cyclops, and baby brine shrimp
- Offer occasional live foods for conditioning
- Feed small portions 1-2 times daily
A varied diet helps maximise colouration and overall health.
Common Problems with Green Neon Tetras
Faded colours, often caused by:
- Stress
- Poor water quality
- Inadequate diet
Disease outbreaks, linked to:
- Poor aquarium maintenance
- Sudden parameter changes
- Overcrowding
Shy behaviour, caused by:
- Small shoal sizes
- Lack of planting and cover
Why Green Neon Tetras Are So Popular
- Brilliant iridescent green-blue stripe
- Perfect for planted and aquascaped tanks
- Peaceful and community-friendly
- Ideal for nano aquariums
- Impressive shoaling behaviour
When kept correctly, Green Neon Tetras create a dazzling display of colour and movement that enhances almost any freshwater aquarium.
Frequently Asked Questions
No, they are a separate species that stays slightly smaller and often displays a more intense green-blue sheen.
At least 8-10, although larger shoals are highly recommended.
Yes, they generally coexist well with adult cherry shrimp and other dwarf shrimp species.
At least 45 litres, with plenty of plants and stable water conditions.
Looking to Buy or Sell Green Neon Tetras Locally?
TankMate UK connects fishkeepers who want to buy, sell, or rehome fish safely within their local area.
Whether you're building a vibrant planted aquarium or looking to rehome surplus fish, you can:
- Browse fish available near you
- List your own fish in minutes
- Avoid the risks of shipping
Explore local listings with TankMate UK and find the right fish for your aquarium.