i had 9 frontosa in a 125 gallon tank, the big male was my first fish, after a year and a half i got bored with them and wanted characins, but i made sure they didnt just go to any old place, i asked all the lfs in my area what they would give me and how they would be sold, i did not like the terms, i tried craigslist and the only people who called had like a 20 gallon tank lol. so i ended up calling the president of a fish club hes also a breeder and asked him if i should brin all nine to his next auction, he became interested so i sold all 9 to him there very happy in there new 150 gallon tank, so didnt feel bad at all. but i miss my big male a little since he was my first fish...