Astronauts eat dried fish

I was thinking about an biological experiment that will have chance to be carried in spacecraft. I asked my mom, "It's better to use fish or microorganisms, like bacteria or e coli,  for experiment in an outer space?" She replied me, "Of course, fish! If there's something wrong or accident with shuttle and it delays to come back to Earth, then the astronauts can eat the fish." All of sudden, I literally felt like "lol". Silence for couple seconds. We laughed. "Yeah they will tell you 'Sorry your fish has died, so we ate them' but you will help them survive," said my mom. I told her with a serious face "Mom, the factor I'm thinking about is hypo gravity." She then replied, "Then definitely don't use fish because water will float in the air and they will all dry out. Wait. Maybe astronauts would like to have some dried fish since the food they eat in space is generally not tasty." LOL, I thought "Yeah, I will also include some salt in the material list of the experiment."