Does the questioner want to ask "What happened to the stewed golden arowana that disappeared?" melt. Arowana maw is a type of isinglass. This isinglass comes from the ocean fish Big Yellow Croaker. It is a highly nutritious food obtained by frequently processing the swim bladder of this fish. When stewing, the arowana glue melts easily at high temperatures. As a result, the arowana glue looks like it has melted and disappeared, but it is actually still inside.