I've mentioned Glaucus before on this blog. He was a rather lucky fisherman in my opinion (despite what happened to Scylla.)
According to mythology, Glaucaus was a Boetian fisherman. One day he landed upon an island that he had never heard of. There were no signs of anyone on the island and so he decided to stay awhile. He laid out his catch on the grass and laid himself nearby to nap. As he was drifting off to sleep he heard a strange noise. Looking up he was shocked to see his fish, revived and heading off to sea. Amazed he looked around trying to discover what had caused this miracle. The only thing he could imagine was that there was something special about the grass. He ate some of the grass and was overcome with a longing for the sea. His legs transformed into a fishtail and his hair and beard turned sea-green.
At first Glaucus was unhappy about his transformation but the other tritons and sea gods welcomed him with open arms. Oceanus and Tethys cleansed him of his mortal element and taught him the art of prophecy.
Unfortunately it was shortly after this that Glaucus fell in love with Scylla and went to Circe, and we all know how well that turned out.