Crassilabrus and pellegrini are among the largest of the red hump complex , steindachneri the smallest...
According to South American Eartheaters (Weidner) pellegrini reach 25 cm, crassilabris and steindachneri can both reach 20 cm. I think Justin meant that they are smaller than many species of Geophagus in general, not that crassilabrus are the smallest of the Red-Humps.
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