The baby fish that is. My dear husband is going away on a business trip soon and I am being trained to make baby brine shrimp to feed to our baby guppies and plattys. What do baby brine shrimp look like? So glad you asked. Click here. If you ever grew these you have grown brine shrimp. In twenty-four to thirty-six hours we'll know if I followed his directions correctly and if I can be trusted to grow brine shrimp while he's out of town.