How do you ship out fish to buyers elsewhere?

It depends on where it’s going. If I know it’s going somewhere cold, I’ll add heating pads - likewise if it’s going somewhere hot, I’ll add cooling pads to try to not overcook or overheat.

As far as medicine, I avoid feeding 2 days before shipping (with next day shipping bring a requirement) in order for them to not poop and ammonia poison themselves from stress. I also add in some stress relief, with a tad of prime just in case levels get a little high.

I’ve never personally shipped or received a fish from outside of my native country (US), so no clue how how to even manage that since many countries can take over 30 days with port inspections and delays.

I've never tried before. Curious to read more responses on this.