I am trying to come up with a Spined Comet and/or a Snubbed Comet-been working on it for 3 days...does anyone know the correct breeding to get one of these?????

Those particular fishies have many possible ways to breed them. If you check the Spoilers thread in the Fish Tycoon Guide section of the forums, you will find a number of breeding references that should help you with your quest!

All fish have lots of different ways in which to make them. You just have to keep cross-breeding lots of different fish until you find what you're looking for. You can also get programs where you type in what you need, and it tells you how to make them.