A lot of people just get by because they have the support of friends who can help. It's a healthy way of life. In goin fishin, Lionel gets by through the help of his friends.
In Nemo, Friendship is the main reason that they are able to find nemo, who got lost in the deep blue sea. It connects to Goin Fishin because Lionel needs his friends to get him through the hard times.
In the short story Goin' Fishin', one of the major themes is friends will help you through tough times. In the novel Percy Jackson and the Lightning Thief, Percy gets help from his friends to find out who he really is and to help the camp members survive. This links to the theme because of the help Percy gets help from his friends and camp mates.
Hard times will bring the good out in people. It reveals the people who are really there for you.
People try to avoid tough situations, which makes sense because no one wants to go through them. But, people shouldn't think its the end of the world because you will have friends to be there for you.