Green Neon Tetra Identification Guide
Distinguish the green neon tetra from a true neon tetra by its shorter, blue-green stripe and minimal red coloring.
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Key identification features
- Small, slender body about 1 inch (2.5 cm), smaller than a common neon tetra
- Bright blue-green iridescent stripe running from the eye to the base of the tail
- Red coloration is minimal, limited to a faint patch near the caudal peduncle rather than the whole rear half
- Translucent, silvery-white belly
- Stripe color shifts from blue to green depending on the viewing angle and light
Common look-alikes
- Neon tetra: larger, with a vivid red stripe covering the entire rear half of the body below the blue-green line, versus the green neon's minimal red patch.
- Cardinal tetra: also shows extensive red along the whole lower body and reaches a larger size than the green neon.
- Glowlight tetra: displays a solid orange-red stripe rather than the green neon's blue-green iridescent line.
Where you'll see one
Native to blackwater tributaries of the upper Rio Negro basin in Brazil, this species schools in dim, tannin-stained forest streams with dense leaf litter.
Frequently asked questions
How do I tell a green neon tetra from a regular neon tetra?
Check the red coloring: neon tetras show red along the whole rear half of the body, while green neons have only a small red patch near the tail.
What size clue helps confirm a green neon tetra?
It stays notably smaller, around 1 inch, compared to the larger neon and cardinal tetras.