No widely documented film, show or creator source is attached to this short clip, so it is best treated as a soundboard meme sound rather than a quoted line from a known work. Its appeal comes from the odd, specific gratitude itself, thanking a fish instead of a person, which makes it easy to drop into animal, fishing and aquarium edits without needing context. Shared as a quick downloadable audio snippet, it works as a light reaction cue, and it remains useful because the joke stays clear even when heard for only a few seconds.