This has been a problem for a long time but has gotten worse with the rise of cost since more places can't raise their prices any higher and hit their target market so instead they either lower portion size, which is very apparent in many establishments, or find a cheaper options to pass off as the menu item. Sometimes it is not even the establishments fault they are being tricked also since they get into these name games where a fish is technically the same species as the one being sold and is passed off as such.