i would like to make money from the other fishes as well. there should be more possibilitys to earn. now its only goldfish and whale that gives you the good feeling, the other catch is a bit disappointing. also there should be a bonus that speeds the fishing process up, so that the bubbles come earlier.
tip for leveling up: level 5 (stonehenge) is perfect to train your heroes.
in this example im training darkie. hes protected by a druid apprentice and backed up by 1 slowing mage in front and some more mages after him.