grass carp is the most if they are all fish weighing three to five catties, because they are small, and the fishbones don't grow at all, and they are all small spines, so they are rarely seen in the market.

If they are all more than ten catties, grass carp is the most expensive, and silver carp is full of thorns, because silver carp eats its big head, and the meat behind them is basically for you.