Fishbelly White was remade as a feature length film: The Mudge Boy (2003), which as of this writing, I have not seen·
Many fish have a whitish underbelly, which is said to make them less visible to predators when viewed from below· I have not yet found a satisfactory explanation of the term in the context of this film·
The final scene surprised me, and seemed to me to be out-of-character behavior, verging on pathological·
The "trailer" link is the full movie with Spanish language captions· A more satisfying viewing experience may be found at the Vimeo link.