libfishsound1-dbg binary package in Ubuntu Bionic amd64

 libfishsound is a wrapper around the existing codec libraries and
 provides a consistent, higher-level programming interface. It has been
 designed for use in a wide variety of applications; it has no direct
 dependencies on Annodex or Ogg encapsulation, though it is most commonly
 used in conjunction with liboggz to decode or encode Ogg encapsulated
 Vorbis or Speex files.
 .
 This package contains debugging symbols useful for tracing bugs in the
 libfishsound1 package.

Source package