Not quite freshwater, but not quite saltwater. Lives fine in freshwater with doses of salt (I don't suggest table salt or rock salt although some people have been succesful). Common examples are the Dragon Goby and the Green Pufferfish.
Tropical and brackish are not mutually exclusive. Tropical means warm, and brackish means somewhat salty. Many brackish fish ARE tropical, and many tropical fish are brackish. You can keep tropical brackish fish with other tropical brackish fish, if they have the same temperment and will not harm or eat eachother. You can keep some brackish fish with some freshwater tropicals, and similarly you can keep some brackish fish with some marine tropicals. There are no wide open set of principles for brackish fish compatability beyond those that I have just illustrated.
they can be dripped into brackish water tanks
Certain freshwater fish can survive saltwater conditions; examples are black mollies, mono's and scats. All of these fish aren't truly freshwater or saltwater, they are Brackish. Brackish is between freshwater and saltwater, and so these fish are highly adaptable.
Brackish?
probably not, marine fish are designed to osmoregulate at a very specific and unchanging salinity (usually a SG of 1.025) whereas brackish fish by nature are adaptable to anything from fresh water to fully marine but are usually situated around a SG of 1.008. odds are if you put a marine fish in brackish water it would die
YES! Bull sharks mainly stay in brackish waters. They have the ability to swim up the river. Bull sharks have been found at the end of the Mississippi river in the Northern Part of America.
Brackish water
Saltwater fish as fish that live in water with a salinity of higher degree than brackish water, such as fish from the ocean. Clownfish (Nemo), Tangs (Dory), Tuna (Charlie) are commonly known saltwater fish.
I prefer you to use AZOO Micro Pellets or Ocean Nutrition Formula One for feeding small brackish killifish like mosquito fish.
yes barb fisk can live with molly fish they both live in brackish water, they can live with fiddler crabs too!! :)
Flounders are saltwater fish, some can be kept temporarily in brackish water.
Unless it is a saltwater or very brackish lake, the fish will die. Most saltwater fish cannot survive in fresh water and vice versa.