Live brine shrimp are suitable for almost any aquarium fish. Tiny fish, like fry, might struggle to fit them into their mouths.
This live food should be stored in a cool place. It is advisable to use as soon as possible but brine shrimp should keep for a few days if kept cool and out of sunlight.
Once opened, if not all used in one feed, they need to be kept in the water they were supplied in. The best way to store the opened bag is to place it upright in a tall glass.
When feeding to a freshwater aquarium, strain the contents of the bag through a fine mesh fish net and add just the shrimp to the aquarium from the net. This avoids adding salt water to the fresh water environment.
For marine aquariums it’s OK to add the entire contents to the aquarium, or if preferred, you can filter through a net as above.
One bag of brine shrimp is about the right quantity for a single feed for aquariums over 60 litres. This is obviously dependent on the amount and type of fish. The bulk of the brine shrimp introduced into an aquarium should be consumed within 15-20 minutes. However, don’t worry if there are a few odd ones left after this time because they will live for up to 5 hours even in fresh water and your fish will hunt them down and eat them.