The best replacement for neon tetra is cardinal tetra.

The best alternatives to neon tetra are rated as following:
★★★★★  cardinal tetra
★★★  black neon tetra
★★★  cardinal
★  jumbo neon tetra
★  glowlight tetra
★  dwarf gourami
  neon tetra

Your alternative for neon tetra is not listed? Suggest!
Speaking about neon tetra, one probably shouldn't forget about angelfish.

Other search terms related to neon tetra and their ratings are:
★★★★★ angelfish
★★★★ discus
★★★★ tiger barb
★★★ betta fish
★★ zebra danio
★★ gourami
★ female betta
You have in mind a companion for neon tetra and it is not yet here? Propose!



Google Trends

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neon tetra
cardinal tetra
black neon tetra