They don’t know how to eat fish in their food bowl. They do not know how to find natural food. They cannot survive in a lake or a river if you bought them at a pet store. Goldfish can’t live in the sea because they’re freshwater fish. They are easy to care for, and they make a great addition to any home aquarium. In captivity, an aquarium with live plants and a dirt bottom is a good place to keep them. As with the carp, they thrive in murky water. In the wild, goldfish can be found in slow-moving, freshwater bodies of water. The same is true for fish with a high tolerance to salt: they can tolerate very high salt concentrations but they will die if they are exposed to a higher concentration. This is because the fish’s body is unable to cope with the increase in salt, and it dies. It is measured in milligrams per liter (mg/L) or millimoles per litre (mmol/l).įor example, if a fish has a salt tolerance of 0.5 mg/liter, it can survive in a water that is 1,000 millilitres (1.2 liters) saltier than it is, but it will not be able to survive if the salt concentration is increased to 2,500 milliliter (3.6 litres). Stenohalinity is a measure of the concentration of dissolved salt in water. goldfish can live only in very low salinities and are included in the stenohaline species. Most fish are sensitive to any changes in the levels of salt in the water in which they live. What size tank do I need for 2 goldfish?.Can I put fish from the ocean in my tank?.What happens if you put freshwater fish in saltwater?.
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