I use regular Miracle Grow. They make a blend for tomatoes but it is more expensive. Walmart has a similar product, same analysis as Miracle Grow, quiet a bit cheaper than MG.
if you crappie fish save your carcasses after you fillet them, freeze them till plantin time. when you plant tomatoes dig your hole 4-6 inches deeper than you normally would. put fish in dirt, cover up with good layer of dirt then plant tomato plant.