well i have 3 harlequin rasboras and 2 dwarf neon rainbows in my tank and they all school together and my dwarf cichlid follows them all (in a semi aggressive way though LOL)

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~ Max
29 Gallon Tall Planted and running Eheim 2217
~~ a German Blue ram pair, 9 Harlequin rasboras, 2 octilincus, 2 Dwarf neon rainbows and a honey sunset Gaurami

16 gallon Bowfront tank ~~ 3 Neon Tetras, red tailed shark, 1 angel (its a real bully), BN pleco and an albino BN pleco.