Neon tetra: gear and buying guides
The neon tetra is a small schooling fish that only thrives in groups of at least 10, where it displays its natural behavior. It needs a tank of at least 60 to 80 L, soft and slightly acidic water between 21 and 25 °C, and subdued lighting. Sensitive to fluctuations, it should only be added to a well-matured tank.
Profile : 3 to 4 cm as an adult, 60 to 80 L minimum for a school of 10, soft water between 21 and 25 °C.
An accessory from our shop for this use: Programmable automatic aquarium fish feeder (€32.90) · the whole shop
We don’t ship products to your country yet; our practical guide downloads anywhere: Beginner axolotl: aquarium and care (€19)
Species profile
- Lifespan
- 5 to 8 years
- Adult size
- 4 cm
- Minimum tank
- 60 L
- Water temperature
- 21 to 25 °C
- pH
- 5.5 to 7
- Temperament
- Gregarious and timid, it only settles in a tight school of ten or more, otherwise it pales and hides.
- Health watch
- neon tetra disease (Pleistophora), incurable · white spot disease after a temperature shock
🩺 This health information is general in nature and does not replace a consultation: at the slightest doubt about your animal’s condition, talk to your vet.
Neon tetra gear, family by family
-
🍖
Food
A micro-omnivore: small flakes or micro-pellets suited to its tiny mouth, with baby brine shrimp and frozen daphnia. Feed small amounts eaten within two minutes.
-
🧴
Care & grooming
It requires stable, soft and slightly acidic water with low nitrates. Change 20 percent of the water weekly, pouring slowly, as it is sensitive to osmotic and temperature shocks.
-
🎾
Toys & enrichment
An Amazon-style setup: dense planting around the edges, driftwood roots and a few dead leaves that amber the water. A dark substrate and soft lighting bring out its colors.
-
🏠
Bedding & habitat
A tank of at least 60 to 80 L, longer than tall to allow schooling. Keep an open swimming lane in the middle and avoid tankmates large enough to eat it, such as adult angelfish.
-
🧳
Travel & safety
Transport the school split across several opaque bags to limit stress. Drip acclimation of at least 45 minutes is advised, especially into harder water.
-
🧰
Accessories
A moderate-flow filter, a 50 to 100 W heater, GH/KH hardness tests and possibly RO water for softening. Expect 100 to 180 euros to equip an 80 L tank.
🎾 Enriching a Neon tetra tank: hardscape, shoal and occupation
Hardscape designed for its swimming zone
The swimming zone dictates the decor: a Neon tetra moves in midwater, so tall background plants, wood and clear swimming lanes organise its space. An aquarium’s enrichment is its hiding places and its currents — not fluorescent ornaments.
Group life: the first enrichment
From 10 individuals up, the Neon tetra becomes itself again: hierarchies settling, displays, coordinated swimming — in small numbers it lives in chronic stress and loses its colours — group size is the species’ first “toy”, before any decor purchase.
Food as occupation
Feeding is occupation lever number one: prey in the current, multiple shifting feeding points — the underwater equivalent of a mammal’s snuffle mat.
Quick answers
- How many Neon tetra should be kept together?
- 10 minimum, more if the tank allows: it is a shoaling species, and numbers shape its behaviour and colours alike.
- How do you enrich a Neon tetra tank?
- Through layout above all: decor designed for its living zone (in midwater), meals served in varied ways and a complete group — gadgets add nothing.
See it in the Planète Pets shop: Resin shipwreck hide for aquariums, 4 models (€26.90) · the whole shop
Our products don’t ship to you yet, but the PDF practical guide is instant: Beginner axolotl: aquarium and care (€19)
🏠 The Neon tetra tank: 60 L, hardware and start-up
60 litres minimum: why that number
For a group of 10+ Neon tetra reaching 4 cm as an adult, plan 60 real litres — and remember a big tank is more STABLE, hence easier, than a small one: parameters drift slowly, leaving time to correct. This volume suits a sturdy standard cabinet — just verify perfect levelness.
Hardware: filter, heater, lighting
A filter turning the volume over three to five times an hour, a heater around 1 W per litre set to 21 to 25°C, backed by an independent thermometer — built-in thermostats sometimes lie, and lighting on a timer at 8 to 10 hours a day: any longer and the algae win.
Substrate, plants and start-up
Nutrient substrate under fine sand or quartz, robust plants (anubias, vallisneria, Java moss) and wood to structure the territory. Then patience: a complete nitrogen cycle (3 to 4 weeks, nitrites back to zero) before the first Neon tetra — the step every hurried beginner pays for dearly.
Quick answers
- What tank size for Neon tetras?
- A real 60 litres minimum for a group of 10+ — below that, parameters drift too fast to catch.
- Does a Neon tetra need a heater?
- Yes, about 1 W per litre set to 21 to 25°C, with an independent thermometer double-checking the thermostat.
In our shop, for this use: Hollow moss-effect resin log for aquariums (€20.90) · the whole shop
Outside our shipping area? The downloadable practical guide: Beginner axolotl: aquarium and care (€19)
🧰 Accessories for a Neon tetra: tests, upkeep and budget
Water tests: your dashboard
A drop-test kit (€15-30) is THE first accessory for a Neon tetra tank: NO2 and NO3 weekly, GH-KH-pH at any doubt. Then come the net sized for 4 cm, the substrate siphon and the dedicated bucket — never the cleaning one, whose detergent traces contaminate the water.
The Neon tetra specifics
a battery backup air pump: at full stocking, a filtration failure is measured in hours.
The full budget, no surprises
An equipped 60 L setup (tank, filter, heater, lighting, substrate, decor, tests): expect €200 to 450 upfront, then €10 to 25 a month (food, electricity, conditioner). Second-hand often halves the tank price — only the filter and heater deserve to be new. Details on the full Neon tetra profile.
Quick answers
- Which accessories are essential for a Neon tetra tank?
- Drop tests, siphon, net, dedicated bucket, an independent thermometer: the whole kit stays under €60.
- What budget for keeping a Neon tetra?
- €200 to 450 to set up an equipped 60 L tank, then €10 to 25 a month in routine costs.
See it in the Planète Pets shop: Mini USB aquarium air pump with tubing and air stone (€22.90) · the whole shop
Outside our shipping area? The downloadable practical guide: Beginner axolotl: aquarium and care (€19)
Guides to read
- Community aquarium or species-only tank: which is right for a first setup?Bedding & habitat
Community aquarium or species-only tank: pros, cohabitation risks and advice for choosing how to set up your first aquarium.
- Best easy aquarium plants without CO2 for beginnersToys & enrichment
Which aquarium plants can you choose without CO2 injection? A selection of hardy, easy plants for a beginner's planted tank.
- Budget for a first brackish water aquarium: the real cost to get startedBedding & habitat
How much does a first brackish water aquarium cost? Tank, filtration, salt and salinity monitoring, budgeted item by item.
- Changing filter media too often: the mistake that wrecks your aquarium's cycleCare & grooming
Why you should never replace all your filter media at once: nitrifying bacteria, replacement frequency and the right habits.
- Restarting a neglected aquarium: a step-by-step guideCare & grooming
How do you restart an aquarium that's been left neglected without endangering the fish? Steps, water changes and mistakes to avoid.
- GH, KH and pH: understanding and adjusting aquarium water hardnessCare & grooming
GH, KH, pH: what do these three readings actually measure, and how do you adjust aquarium water hardness without stressing the fish?
- Upgrading to a bigger aquarium: moving your fish without the stressBedding & habitat
How do you upgrade to a bigger aquarium without breaking the biological cycle or stressing your fish? Steps and mistakes to avoid.
- Aquarium electrical safety: GFCI protection and good habitsTravel & safety
Heater, filter, lighting near the water: what electrical precautions keep an aquarium safe for fish and people?