Gollum even made a song about raw fish, which is 'The rocks and stones! They're like old bones all bare of meat!' that he used as a riddle to Bilbo, and would much later sing to Frodo Baggins in a longer version. He lived in the Misty Mountains for over four hundred years, living on raw blind fish (which he caught from his small row boat), bats, and, occasionally, small Goblins.

Gollum seeing light for the first time after his transformation, by Frédéric Bennett He called it his 'Precious' or his 'Birthday Present,' the latter as a replacement in his mind for killing Déagol. The Ring's malignant influence twisted his Hobbit body, as well as his mind, and prolonged his life far beyond its natural limits. Sméagol was quickly corrupted further by the Ring and banished by his people turned by his grandmother out of her hole, he was forced to find a home in a cave in the Misty Mountains in around TA 2470. When Déagol refused, Sméagol promptly flew into a rage and fought with Déagol over the Ring, choking him to death and taking the Ring as his own. Almost immediately, Sméagol fell to the power of the Ring, demanding it as a birthday present. It was there that Déagol found a gold Ring in the water, after being pulled out of their boat by a large fish. Déagol was his cousin, and on Sméagol's birthday, they went fishing in the Gladden Fields. Around the year 2463, Sméagol became the fourth Bearer of the One Ring, after Sauron, Isildur, and Déagol.

Originally a Stoorish hobbit, born in TA 2430, Sméagol spent the early years of his life living with his extended family under a Matriarch, his grandmother.

Lord of the rings characters gollum