/www.google.com.au/search?hl=en&biw=1333&bih=603&q=geophagus+Aragauia+vs+tapajos&oq=geophagus+Aragauia+vs+tapajos&aq=f&aqi=&aql=&gs_sm=e&gs_upl=972l10876l0l11115l14l14l0l11l0l0l478l893l0.1.1.0.1l3l0

6, from 3-4.5" 2 males 4 females from the looks of things. These are WILD CAUGHT, TRUE altifrons... not cheap! payed over £100 for the group of 6
If you have interest in them let me know as i could do with shifting them sooner rather then later 