Those fish look pretty healthy if you ask me. But then im not jumping on the band wagon on this one and slating the owner as we nothing about the circumstances.
argh I'm trying to find the ebay seller I found that was selling one of those tanks with no water line (my brain is dead today)... it had a pleccy in there, laid on the bottom, and from head to tail it was just over half the length of the tank... will edit if/when I find..
oh yeah, you know what, i totally disregarded the heater in that picture and thought the tank was massive for some odd reason and through the pleco was at least a foot long too! I need my eyes tested.