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Are black neon tetras aggressive?

The Black Neon Tetra is not considered to be an aggressive fish and will get along with many other peaceful fish such as;

  • Cory Catfish
  • Rasbora
  • Zebra Danio
  • Honey Gourami
  • Cardinal Tetra
  • Apistogramma Cichlids

For more information, read our guide about fish that are compatible with the Black Neon Tetra:

Black Neon Tetra Tank Mates – How to form a Happy Little Community With Black Neon Tetras

Some Care Tips To Maximize Their Growth

Black Neon Tetra is a beautiful, fish with black and white stripes that go from the gills to the tail, and a distinctive bright orange semi-circle above the eyes. They hail from slower-moving streams of some North American countries (primarily from Brazil and Bolivia).

They can make a good choice for your first fish, as they are very hardy and can survive a wider range of parameters than many other delicate fish species. They love to school, so it’s a good idea to keep at least half a dozen of them in, ideally, a 20-gallon tank, but they can survive in a 10-gallon as well.

Black Neons prefer a planted tank with low lighting. They are medium to top-level dwellers, so the choice of substrate might not matter much. Gravel is a good idea, especially if you are planning a community tank because a lot of other fish can adjust well to that. If you want to mimic their natural habitat, the ideal substrate would be a white sandy bottom with a few pebbles. But you can also make them happy by adding some golden brown leaves at the bottom.

Some Black Neons prefer clear water, and some might be happier in slightly tan stained water. You can observe that behavior when you go and pick them up from the store. Some other things that you should know about them are:

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  • Care level: Beginner
  • Size: 1-1.6 inches (males are slimmer, females are full-bodied)
  • Ideal tank size: 20 Gallons
  • Temperature range: 75 – 82 °F
  • PH range: 5.5 – 7.5 (6 to 6.5 is ideal)
  • Hardness range: 4-8 GH (5, 6 is ideal) But a lot of fish keepers have found them happy and thriving in softer water as well.

Black Neons are pretty hardy when it comes to parameters. But stocking them with fish that stress them out can be very harmful. This is why it’s a good idea to familiarize yourself with some of the tank mates that your Black Neon Tetra will really get along with. Also, they prefer slow to medium water currents, so introducing fish that like stronger currents, like Hillstream loach, might not be a good idea.