Protecting fry and shrimp: the solutions D system and nylon stockings Sometimes you need a quick fix to prevent the fry from being sucked in. Use secondary spaces or areas for fry and shrimp The idea is to place the fry and shrimp in a secondary area. This will not only protect them from filters, but also from predators. Fry love areas where there are plants to hide in. Protect the fry with protective nets If you are more in the world of the pool, we offer another solution, just as effective. These are protective nets for the pumps. These are made with fine mesh, and which one will place when one notices that the fish reproduce. This will protect the fry, and prevent them from being sucked into the pump. Viviparous fish Among other fish, and if we are looking for more flexibility, we will prefer viviparous fish. In other words, these are those fish that give birth to fry rather than laying eggs. The most used in aquariums belong to the Poeciliidae family, viviparous or more precisely ovoviviparous fish.