This fluffy "fungus" destroys the surface tissues of the fish before penetrating into the muscle layers and blood vessels. Saprolegnia filaments hyphae are long with rounded ends. During "fungus" growth, a mass of hyphae is formed.
But for goldfish, freshwater aquarium salt when used effectively can provide many benefits. Already know the benefits? Why on earth would you add aquarium salt?
After all, goldfish are freshwater fish. You might already know that salt reduces stress. The cells in your goldfish contain a specific salinity or salt and water balance.
To keep up with this, your goldfish have to constantly reabsorb small amounts of salt from the environment. Luckily, aquarium water naturally provides some salt — though the amount of salt in a freshwater aquarium is much smaller than the salt density in a saltwater aquarium.
And rightly so, because too much salt could seriously hurt — even kill — your goldfish! This can have all sorts of benefits. Freshwater aquarium salt reduces stress.
Some goldfish diseases can stop the gills from functioning properly.
Salt replenishes much-needed electrolytes, helping your goldfish maintain a healthy flow of oxygen and carbon dioxide.
Aquarium salt helps goldfish recover faster from infections.
Your goldfish actually save more energy to fight off diseases and heal painful scrapes — very much like how rest helps you and me recover from nasty colds. Aquarium salt kills off parasites. For this reason, salt baths are particularly effective treatments for parasite infections.
Freshwater aquarium salt prevents nitrite poisoning. Chloride ions in aquarium salt reduce nitrite absorption, preventing nitrite poisoning when nitrite levels are high. Some invertebrates like snails and plants are very sensitive to salt. And if your aquarium uses zeolite to cut down on ammonia, effects may be reversed during a salt treatment.
Always remove sensitive invertebrates and zeolite before adding any type of salt. Freshwater aquarium salt can be used as a preventative to help keep your goldfish healthy or as a treatment to cure common goldfish diseases especially when parasites are to blame.
But what type of salt should you use? Keeping Salt Goldfish Friendly: Aquarium salt is a good choice.
But if you want to keep your options open, rock and kosher salt are healthy alternatives. Freshwater aquarium salt is quite different from the salt you keep in your kitchen cabinet. Created from evaporated sea water, this salt contains no harmful additives like table salt and is specifically made for freshwater aquariums.
Plus, you can buy it from any pet shop where fish are sold.Endocrine system: Endocrine system, any of the systems found in animals for the production of hormones, substances that regulate the functioning of the organism. Such a system may range, at its simplest, from the neurosecretory, involving one or more centres in .
Osmoregulation in Marine Fish Marine bony fish are hypoosmotic to sea water and thus will lose water and take in excess salt. To counter this bony fish: (a) Osmoregulation in a marine fish.
The control of water balance in animals is known as osmoregulation. Osmoregulation is a homeostatic mechanism. The body fluids of a salt water fish are hypotonic (higher in water concentration) compared with the surrounding sea water – the sea water is therefore hypertonic.
Without bladder reabsorption, the fish would need to ingest 10% more seawater and subsequently manage the excess ionic load [16 x  Howe, D. and Gutknecht, J. Role of the urinary bladder in osmoregulation in a marine teleost, Opsanus tau. Osmoregulation in fish.
Because of their environment, osmoregulation in fish presents specific problems. Fish have adaptations that enable them to deal with these problems. Thus, osmoregulation is a process that requires the expenditure of much energy on the part of the fish--even when they appear to be inactive.
This constant expenditure of energy to maintain an osmotic balance is a reason why proper nutrition and low stress levels are important for healthy fish.