How to distinguish between blue and red neon neon aquarium fish. Key differences.
Although the blue neon tetra (Paracheirodon innesi) and the red neon tetra (Paracheirodon axelrodi) are very similar and are often kept together, there are several key differences between them:
1. Size and body shape
2. Coloration
3. Housing conditions
4. Habitat
5. Price
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