In any case, this is much better than a lot of the poor fish I see on Craigslist, living in pea-soupy green water, five year old Pacu who are twelve inches long, ten gallon tanks that come with a free Oscar, etc. If I were to have an Oscar, I'd say 75, minimum. But this guy's advice isn't that bad. He seems to care about the fish enough to mention some aspects of care.