Pregnant Fish should be handled delicately. Pregnancy makes the fish vulnerable to predators as they cannot swim fast. Hence, these fish should be isolated or there should be sufficient plants in the aquarium which offer seclusion and privacy.
Some Pregnant Fish can become aggressive towards other fish. It is best to isolate such fishes in another tank. Pregnant Fish may not be able to swim fast and may not be able to compete with other fish for food.
While feeding, ensure that the food reaches the pregnant fish.