Cichlid for 25 gallon

I like the Rainbow cichlid. I will see if i can get a pair.
 
Going to look into the Cupid Cichlid ( biotodoma cupido ) Book says they are sand sifters i like the sound of that.
 
Maybe but I like geophagus but get too big. The cupids have a similar head shape. the LFS guy said he can get any thing so going to ask.
 
If i had a extra 25g i would do a pair of neetroplus nematopus, or a pair of archocentrus sajica.
 
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