You can move the fish to refrigerator and allow it to thaw. Or, you can place it in cold water, changing the water every 30 minutes until thawed.
Most fish will remain safe to eat for up to six months. Fish that are fatty, such as salmon and tuna should keep for 2-3 months when frozen. Fish that are lean, such as cod and catfish will keep for up to 6 months when frozen. It would not be safe to eat fish that was frozen for 2 years because it would most likely be spoiled and could cause food poisoning.
Fish does not last long in the refrigerator. Depending upon the type of fish and assuming it was fresh when frozen, thawed fish could keep up to 5 days refrigerated. But it would be best to use the fish as soon as it is thawed. See Related Links. You can also cook fish from frozen.
If the beef has been truly frozen without fail during the past two years, it is still edible but its texture, taste, and nutritional value will have been diminished. The main risk is to let it defrost for too long in the open air and let bacteria thrive on it. ===============================
Unless you are an expert Sushi chef, fish should always be cooked, because fish spoils very quickly. After buying fresh fish it should be either chilled, frozen or cooked -- NEVER leave fish at room temperature for more than an hour or two.
As an abbreviation, kilo could easily stand either for kilograms or kilometers.
The convection microwave is ideal for defrosting foods. To defrost, remove the foods from packaging that is not safe for the microwave such as foam trays and plastic wrapping because they do not tolerate high temperatures and tend to melt or warp which may cause harmful chemicals to be absorbed by the food. For best results, select lids or wraps that are safe for the microwave. Use the Time Defrost setting and set the timer as a reminder when defrosting and never let food defrost for more than two hours. Be sure to defrost foods completely before cooking in the microwave. If foods are partially frozen, uneven cooking will result. Cook foods immediately after they have defrosted.
If you put the frozen breasts into a bowl of cool water, it does not take very long for them to thaw. (Less than an hour for two.) Be sure to leave the chicken in its water tight plastic bag, and avoid using hot water. You can thaw them in the fridge in about 12 hrs. Or use the microwave on the defrost setting and it will take about 10-15 minutes.
Defrost in the refrigerator for safety. I'm seeing recommendations for anywhere from 6 hours per pound up to 10 hours per pound. That would mean a total of 30 to 50 hours. A two-day thaw should be a safe amount of time.
It keeps for two days and can be a bit bitter if left over night to defrost.
Two kilo is about 4.5 pounds
A kilo is a unit of mass. An hour is a unit of time. The two units are therefore incompatible.
Frozen fruit should not take that long to thaw, two to three hours outside of the refrigerator or a little longer if left to defrost in the fridge. The length of time it takes for the fruit to thaw will also depend on the size and quantity of fruit.