Be careful feeding with tail on!!!
Tail can have sharp spine, I lost a nice flowerhorn that ate prawn with tail on.. Prawn tail punctured its intestine :(
That price is for raw with shell on..
I usually remove the shell however..
Many members here stuff the prawn with aro or massivore pellets, however in my experience if the aro is smaller, or likes to chew its food they usually spit the pellet out
Safeway usually has 2 for 1 - 1lb bag of prawn for 8 dollars.. So 2lb for 8 bux..
I also get fresh prawn from boats in steveston, around 5 dollar a pound never frozen.