Smarter than you think: Fish can remember where they were fed 12 days later. Summary: It is popularly believed that fish have a memory span of only 30 seconds. Canadian scientists, however, have demonstrated that this is far from true — in fact, fish can remember context and associations up to 12 days later. How…

Symptoms generally appear within minutes to an hour after eating affected fish. They typically last 3 hours, but can last several days. How long does it take to get food poisoning from fish? Symptoms of scombroid fish poisoning begin quickly, within about 15 minutes to 2 hours after eating the fish. Most people experience some…

Any frozen fish or shellfish will be safe indefinitely; however, the flavor and texture will lessen after lengthy storage. For best quality, freeze (0 °F / -17.8 °C or less) cooked fish for up to 3 months. Frozen raw fish is best used within 3 to 8 months; shellfish, 3 to 12 months. How long…

Meat and fish can take as long as 2 days to fully digest. The proteins and fats they contain are complex molecules that take longer for your body to pull apart. By contrast, fruits and vegetables, which are high in fiber, can move through your system in less than a day. Is raw fish hard…

Best to fill your tanks with near lukewarm water to start with and save the heater from trying to catch up. I agree that it should take about 24 hours. I have just brought a 100w heater for a 3ft tank, and after 3 hours of been on constantly the it is still not turning…

After the fish dies there is no more DO being ingested and the air in the bladder starts to dissipate, causing the fish to sink to the bottom. After a few days, the internal organs of the dead fish decompose and a gas is formed. This gas causes the fish to once again float. Will…

Susan Westmoreland, food director for Good Housekeeping, offers this advice about storing smoked salmon: Put it on the bottom shelf of your refrigerator, where it’s coldest. Unopened, it will keep for two weeks; after opening, one week. How long is hot smoked fish good for? At a chill temperature of about 3°C fatty products will…

When frozen in an at-home refrigerator, a fatty fish like tuna or salmon will last two to three months. A leaner fish like cod will last up to six months. How long can fish stay in the fridge after being frozen? Thawing fish in hot water is not recommended — this can cause the superficial…

When mature, it leaves the fish and produces large numbers of free swimming young. These must find a host within 48 hours (at water temperatures of 75-79°F) or they will die. The life cycle of “Ich” is shown in Figure 1. How long until a fish dies from ich? Ich takes 5-7 days to kill…

Raw fish and shellfish should be kept in the refrigerator (40 °F/4.4 °C or less) only 1 or 2 days before cooking or freezing. After cooking, store seafood in the refrigerator 3 to 4 days. Any frozen fish or shellfish will be safe indefinitely; however, the flavor and texture will lessen after lengthy storage. Can…

Is it really worth rolling the dice on that day or two old cooked fish? Leftover fish should be safe for you to eat for an absolute maximum of up to 3 days after it has been cooked, according to the USDA. Can you eat cooked fish after 5 days? Cooked fish and other seafood…

When frozen in an at-home refrigerator, a fatty fish like tuna or salmon will last two to three months. A leaner fish like cod will last up to six months. When vacuum-sealed and properly stored in the freezer, fish can last for as long as two years. Can you eat 2 year old frozen fish?…