Green Neon Tetra
Paracheirodon simulans
Green Neon Tetra (Paracheirodon simulans) — Easy care, Peaceful, under Tetra & Characin. Minimum tank in the app: 14.5 US gal min; aim for 72–86°F and pH 5.5–7.5. Green Neon Tetras are an excellent choice for aquarists who appreciate vibrant, dynamic shoaling fish.

Captive lifespan reflects typical experience in a home aquarium, not maximum recorded age; genetics, sourcing, and care vary.
Natural distribution
Mostly South America
- South America
Regional colours match the stocking calculator’s origin map.
Green Neon Tetra Tank Setup
To create an ideal habitat, focus on a mid-height layout with ample open swimming space complemented by plants and driftwood for cover. A soft, sandy substrate and gentle water flow will enhance their comfort, while subdued lighting can help bring out their colors and reduce stress.
What Do Green Neon Tetras Eat?
These omnivores prefer micro foods and will eagerly compete for small pellets or flakes. Be mindful of their feeding speed; they can be outcompeted by faster eaters in mixed tanks, so provide adequate food distribution to ensure each fish gets enough nutrition for optimal health and vibrant coloration.
Green Neon Tetra Tank Mates
Green Neon Tetras harmonize well with other small, peaceful fish that occupy similar mid-water zones, such as other tetras or rasboras. Avoid larger or more aggressive species that may intimidate them, as well as overly territorial fish that could disrupt their shoaling instinct. When kept in groups, they display more natural behavior, reducing the likelihood of stress-related issues.
Are Green Neon Tetras Good for Beginners?
In App-aquatic we file this under easy care. That still means a cycled tank, realistic stocking, and parameters that do not swing every weekend. Aquarists often underestimate the importance of group size, leading to isolated individuals that suffer from stress. neglecting to create a balanced environment with both swimming space and hiding spots can result in reduced activity and increased anxiety among the shoal.
Building a community? Run the full list through the stocking calculator before you add anything else.
Log tests and reminders in App-aquatic—free, same data you see here.




