what is the difference between a brackish tank and a freshh water tank?

Answer 1

Brackish water (less commonly brack water) is water that is saltier than fresh water, but not as salty as seawater. It may result from mixing of seawater with fresh water, as in estuaries, or it may occur in brackish fossil aquifers. Certain human activities can produce brackish water, in particular certain civil engineering projects such as dikes and the flooding of coastal marshland to produce brackish water pools for freshwater prawn farming. Brackish water is also the primary waste product of the blue energy process. Because brackish water is hostile to the growth of most terrestrial plant species, without appropriate management it is damaging to the environment (see article on shrimp farms).


Technically, brackish water contains between 0.5 and 30 grams of salt per litre—more often expressed as 0.5 to 30 parts per thousand (ppt or ‰). Thus, brackish covers a range of salinity regimes and is not considered a precisely defined condition. It is characteristic of many brackish surface waters that their salinity can vary considerably over space and/or time.

Water salinity based on dissolved salts in parts per thousand (ppt)
Fresh water Brackish water Saline water Brine
< 0.5 0.5 - 35 35 - 50 > 50

Answer 2

A brackish tank is like where the river enters the sea it does not have as much salt as the ocean but it has more salt than a fresh water tank does. This is the main difference between these two tanks.

Answer 3

The salinity of the water. Brackish tanks have some salt in them yet no longer as much as a marine tank. maximum brackish fish can stay to tell the story in a freshwater tank yet they do no longer do properly in them. maximum freshwater fish does no longer stay to tell the story in a brackish tank

Answer 4

To simplify this answer for you, brackish water is roughly about 1/4 the salt content of regular ocean water. Of course this depends on the area, some places have more or less salt than others depending on the location. Some common brackish water fish are monos, scats, figure 8 puffers..etc

Answer 5

Brackish water occurs where the salt water oceans meet with the fresh water rivers, it is a salt water concentration, but not salty enough for salt water fish.

Answer 6

brackish tanks require some salt in the water for the fish to live. and freshwater is no salt.

Answer 7

A freshwater tank have species of freshwater fish. The main difference is that brackish water has half saltwater and half freshwater. You would say it would be a mixture of the too main tanks.