thanks everyone for the input. My gf suggested she'd like guppies, and I was trying to accurately explain why she wouldn't.
I'm told guppies do not go with goldfish do to the need for a small amount of salt. As for the goldfish eating them not all goldfish will eat them. In the 30gl that I keep both gold/guppie.I have 2 GF one Big bubble eye andDo guppies go with goldfish? (If the gf's aren't big enough to eat the adult guppies?) The gf's would regulate the population and you'd still have guppies.