How do fish recognize their owners?

Researchers have found that fish recognize each other and gather information by eavesdropping. They're capable of remembering past social interactions that they've had with other fish, and they show affection by rubbing against each other.

FAQ

• Are steamed clams bad for cholesterol?

  Shellfish. Shellfish such as oysters, mussels, crab, lobster, and clams contain large amounts of cholesterol, particularly in relation to their serving size. For example, King crab legs contain 71 mg of cholesterol per serving, lobster contains 61 mg per serving, and oysters contain 58 mg per serving.

• What is king mackerel similar to?

  Similar species Small king mackerel are similar in appearance to Atlantic Spanish mackerel, Scomberomorus maculatus, and cero mackerel, Scomberomorus regalis, all three species being similar in shape and coloration.

• Do carp feed by sight or smell?

  Although the carp has a pair of relatively large eyes, their habit of feeding in the sediments on the bottom searching for small buried food items has required them to have highly developed senses of smell and taste.

• Can hagfish kill sharks?

  When a bigger fish like a shark tries to gulp down or take a bite out of them, the hagfish squirt a whole bunch of slime into the water. The goop is so thick and sticky that predators gag on the goo. It can even kill big fish like sharks as the gel clogs up their gills, which they use to breath underwater.

• Can catfish live after being frozen?

  The surprising answer is yes, sometimes. It is true that some fish can spend the winter frozen in ice and come out swimming once the ice melts. ... Moreover, some fish contain a kind of antifreeze substance that allows them to survive very cold conditions.

• How long should oysters cook for?

  Place oysters on a very hot, preheated grill, cover and cook for 5-6 minutes or until the edges of oysters curl slightly. If you can't shuck: Place the oysters, cup side up on a very hot, preheated grill, cover and cook for 1 minute. The oysters should now be slightly open. Quickly remove the oysters.

23 Related Question Answers Found:

• Is it OK to defrost fish at room temperature?

  Never defrost seafood at room temperature or with hot or warm water as bacteria on the surface will begin to multiply. If you forget to take the seafood out of the freezer in time, place it in the sink (still in the package) under cold, running water.

• Is it bad to eat the poop in crawfish?

  Like other edible crustaceans, only a small portion of the body of a crayfish is edible. ... That being said, most people who are disgusted about people eating crawfish poop line will still eat the poop line of boiled shrimp. One of the first things you learn at a crawfish boil is do not eat the straight-tail crawfish.

• Do you have to refrigerate salt fish?

  Salt cod will keep almost indefinitely refrigerated or at room temperature. You may want to wrap it in several plastic food bags to control the smell. Salt cod must be soaked overnight before cooking to remove the salt.

• What dies an oyster taste like?

  Eastern oysters taste of the salty sea and various minerals, not fruit. Olympias and European Flats taste metallic and smoky.

• What depth do you troll for salmon?

  Sometimes king salmon like to hang out a bit deeper; we're comfortable putting our lures at 60 or even 80 feet if the fish are there. Troll a bit slower for king salmon: 1.5 to 2 miles per hour is perfect.

• Why is basa fish so cheap?

  Basa is said to be inexpensive because it grows fast, it's easily harvested and it's processed in factories near the farm. Being able to get the fish to market without the expense of maintaining a fleet of fishing boats helps keep the price low.

• What happens when two different color shrimp breed?

  Shrimp genetics are not fully understood in the western side of the world anyway. But different colored neos will produce mixed offspring and sometimes revert to wild type. Eventually if they kept breeding, I think you'd see a lot of wild colors.

• Do shrimp eat dead plants?

  Shrimp Will Eat Anything As they grow, they'll also eat algae, dead and living plants, worms (even decaying worms), fish, snails and even other dead shrimps. Shrimp in a fish aquarium will feed on algae growing in the tank and also will clear up any leftover bits of fish food.

• Why do shrimp die in warm water?

  While you must research the exact needs of your pet's species, most freshwater crustaceans live in cool, oxygenated water. Warm tank water will cause crustaceans to grow faster and molt more rapidly, which may shorten their lifespans.

• Is shrimp that tastes fishy bad?

  Your raw shrimp should either not smell strongly at all or smell slightly of salt. If they smell strongly “fishy,” you might want to pass them up. If they smell like ammonia or bleach, absolutely toss them: That's the sign that there's bacteria growing on them.

• Why are clams considered filter feeders?

  Clams are known as filter feeders because of the way they eat their food. Since they have no heads or biting mouthparts, they have to feed in an unusual way. They pull water -- which also contains food particles -- in through one of their syphons and into their gills.

• How can you tell if a clam is closed?

  How do you know if your bivalves are alive? Immediately get rid of anything with broken or damaged shells. Clams and mussels shells should be slightly open, and should shut quickly when you tap on them. If they're closed, don't shut, or float in water, they're dead.

• Can pond fish eat lettuce?

  Koi fish eat just about anything, from small bugs and insects, to plants and algae at the bottom of the fish pond, to store-bought koi fish food. ... They love cereal, lettuce, shrimp, rice, peas, watermelon... pretty much anything we like, koi fish consider food.

• What is trout favorite food?

  Dragon and damselflies are the most favorite food of trout in the water. Dragon and damselflies are nearly two inches in length. These insects have longer lives than the rest of the aquatic insects and are a generous and healthy meal for the fish.

• What fly rod weight should I get?

  Virtually all fly fishing guides agree that a 9' rod for 5-weight line is the most versatile trout rod in the world. If you're likely to fish a mix of lakes, creeks and rivers, a 9' 5-weight is a no brainer first rod. If you have no idea where you are going to fish, buy a 9' 5-weight.

• Will there be fish in 2050?

  An estimated 70 percent of fish populations are fully used, overused, or in crisis as a result of overfishing and warmer waters. If the world continues at its current rate of fishing, there will be no fish left by 2050, according to a study cited in a short video produced by IRIN for the special report.

• Can you eat squid raw?

  Cooking. Calamari can be eaten raw if it is very fresh and properly prepared -- it is often served raw in sushi or sashimi. Calamari can be sliced into rings, battered and deep-fried.

• Do fish bite in 80 degree weather?

  Once water temperatures get into the upper 80s, fishing gets downright tough and bass and other gamefish start getting heat stressed.

• How long do shrimp live in a fish tank?

  Life expectancy Shrimps are relatively short-lived creatures. Dwarf shrimps usually live for only 1-2 years; fan shrimps can live significantly longer, with some individuals having purportedly lived for up to 12 years in the aquarium.

• Why does canned tuna taste bad?

  For all intents and purposes, canned tuna is over cooked. Tuna in vegetable oil does not loose much of their internal oils to the added vegetable oils. When you drain and eat the vegetable oil preserved tuna you get significantly more tuna taste.

• What happens if you don't clean shrimp?

  * You can't eat shrimp that hasn't been deveined. If you were to eat the shrimp raw, the thin black “vein” that runs through it could cause harm. That's the shrimp's intestine, which, like any intestine, has a lot of bacteria. But cooking the shrimp kills the germs.

• Why do fish change gender?

  In males, the reproductive organs produce sperm cells – and the fish begins to behave, function, and appear as males do. ... But – when the fish reaches a certain age, or its mate dies – those initial reproductive organs wither away – and other reproductive organs mature, so that the fish becomes the opposite sex.

• Can I drink milk 3 hours after eating fish?

  “Fish and milk are both protein-rich and if they react they can cause pain, stomach upset and diarrhea but only if you are allergic,” says Dr Tarun Sahni, a general physician at Indraprastha Apollo Hospitals to FIT. This is a myth propagated, everyone eats these two together without any problem.