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Many species of fish will mix with neon tetras (Paracheirodon innesi) they include all of the smaller Barbs, Tetras, Rasboras, Corydoras and Dwarf cichlids (Amazonian). The big things to remember are “1 inch of fish needs 1 gallon of water” and “if a fish is small enough for others in the tank to swallow then it probably will happen”.
