Paracheirodon innesi
Family: Characidae
The Neon Tetra is hands-down the most iconic freshwater fish for planted tanks. I've kept these in nearly every community tank I've built. Their blue-red shimmer under planted tank lights is unmatchedâespecially when you have 15+ schooling together through your Rotala forest.
Buy the setup, not just the fish
Set up a stable 10 gallon planted tank and a real school before adding neon tetras.
The safest filter style for shrimp fry and long-finned bettas because it provides biological filtration without a hard intake.
Skip if: Skip it if you dislike visible in-tank equipment or already have a protected low-flow filter.
Check current price on AmazonAmmonia, nitrite, nitrate, and pH tests prevent the most expensive beginner mistake: adding livestock to an unsafe tank.
Skip if: Test strips are faster, but liquid tests are usually more useful for diagnosing cycling problems.
Check current price on AmazonWater conditioner is not optional when using chlorinated tap water for planted tanks.
Skip if: Dose according to the label; more is not a replacement for cycling or water changes.
Check current price on AmazonA separate thermometer catches heater drift before livestock are stressed.
Skip if: Not a substitute for a reliable adjustable heater in tropical tanks.
Check current price on AmazonAvoid a new tank, tiny groups, and fish that can harass or eat neon tetras.
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Keep at least 6, but honestly 10-12 looks way better. They're shy in small groups. Mine always school tighter when I do water changes, which is normal stress behavior. Lost a few when I skipped water changes for 3 weeksâdon't do that.
Not picky eaters. I rotate between Fluval Bug Bites and frozen brine shrimp. They go absolutely nuts for live baby brine. Feed small amounts 2x dailyâtheir stomachs are tiny.
Tricky to breed on purpose. Requires super soft water (pH under 6) and dim lighting. Most people fail because the parents eat the eggs within hours. I've never successfully raised fryâalways bought from my LFS.
đ Sources: Care parameters based on SeriouslyFish, FishBase, and Aquarium Co-Op. Use this as a planning guide; quarantine new livestock and adjust for your local water and tank maturity.