Sunny (Maile Flanagan) was a small, yellow fish with orange hair in Freshwater High.
Sunny was the fish who gave Jocktopus money in his birthday. Jocktopus, who thinks money is just worthless paper, puts Sunny in a "Punch Later" box. Sunny was apparently saving all of the money he gave for college ("Happy Birthfish, Jocktopus"). He is never mentioned he has though been apperaing in cameo apperances and his final episode is funny fish.He goes to High School but he talks like he is younger then 16 or so,and is mostly smaller then the other teens.
He is shown to pronnounce things that are singular plural. (For example, he pronounces the word "money" "moneys".)
Sunny is shown to have disappeared from the series. This is explained in Fail Fish in the scene where Milo says that he really wants to pass the test. If you look in the right, you could see Sunny getting picked up by Bud's net, meaning Bud has probably sold him to new owners.