lol you bought a "water puppy".. my 3 fires are.. well they are wet puppydogs. they will take worms dropped into their tank, as well as hand feed. they are always out 'n about when i'm around the tank checking out what I'm doing. way more out-going then my TT is. You may need to hand-feed it for awhile an wean it off if you don't want it to hand feed. my biggest one trys to suck my pinky thinking it's a worm sometimes. It doesn't hurt. getting them offa live is a hard thing to do, my guys are stubbornly refuseing anything but live earthworms. So if you can get it eating frozen, keep it on them. You can also try raw shrimp chunks. As long as it's active and hunting, and not mopeing. keep offering the bloodworms and krill. If it refuses to eat after a few weeks and looks emmaciated, I'de break down and offer it earthworms. Some people will dissagree with me and say a fish will not starve to death if food is offered, but I've lost a few fish to this technique and refuse to do it again. So thats a call for you to make.
also they generaly are nocturnal, but i noticed once my guys settled in as long as food was around they where out and about. So try feeding about 1 hour after lights are out or 1 hour before lights go on. And once eating, they won't care when you feed them.