Yes mate, proper ones lol, and if they wanted to, they could have my fingers down to the bone. ive had my hand in the tank a good few times when they have knocked the heater off, or moved the filter swimming into it, and they dont bother, i feed them plenty though, wouldnt be so keen to put my hand in if they hadnt been fed for a while after seeing what they do to a goldfish. price depends on size mate, babys are about £6 each from an aquatics shop. i got my three big ones quite cheap, got all three for £50, paid £40 for the two smaller ones, but that was from my local aquatics shop. so on average for four inch, about £20 each in the shop, i would have paid about £25+ per fish for my seven inch ones, but i didnt buy them in the shop, i bought them private, and as i said, i got all three for £50.