LOL true statement! But there is a difference between normal "picky" and "I will starve to death before I eat what you give me" picky. Rainsford gobies fall in the 2nd group. They often will only eat hair algae - so if you have a clean tank or quarantine in a sterile tank that limits chances of success. I had one that I offered every form of food available...it still starved
Captive bred are supposed to be easier. Idk if that's true but it makes sense.
My Rainford did that. I finally got him eating LRS Reef Frenzy but it was too late at that point.