I don't know about fishbones but how about Tuna fish for pitch problems.
More seriously, I used to gargle with Southern Comfort prior to choir concerts, I also tried sherry.
Water is good, while singing, stay away from fruit juice and dairy products.
I also use lot's of Fisherman's Friends on a bad day.
Certain heart/blood pressure medications can also have serious throat drying side effects, almost ruined canadian tenor Ben Hepner's career.
JohnB