Why do carp go dark?

The colour of a carp is generally governed by pigment cells in the skin of the fish. These are called chromatophores and most are black but other colours do exist. These contract or expand to make a fish either lighter or darker respectively. This process is relulated by hormones in the fish's blood."

FAQ

• How long do rainbow trout live for?

  11 years Maximum known longevity is 11 years but 7 year olds are typically the oldest in most populations. Unlike brook and brown trout, wild rainbow trout (within their native range) typically spawns during the late winter and spring with peak spawning activity in March and April when water temperature are between 10 and 15°C.

• How long does cold smoked fish last survival?

  Fish prepared in this manner can last for up to a week at room temperature. Meats can be hot smoked and left out for only a few days at warmer temps. The smoker should maintain 160 degrees or more for 30 minutes to safely kill any parasites and pathogens.

• How does bad fish taste?

  Secondly, what does bad salmon taste like? If the fish smells pungent, fishy, or ammonia-like, it is probably bad. Fresh salmon should have a very mild scent. Look for a milky coating to indicate the fish has gone bad.

• Is catfish the same as salmon?

  The catfish and salmon are two different fish species at the opposite ends of the food chain, in the aquatic world. The catfish is much bigger than the salmon when adults from both species are compared. Catfish are known to be invasive freshwater fish species.

• Is electric fish edible?

  Technically, yes. However, they are rarely a source of food for humans for practical reasons. For one, they are very dangerous to catch. And second, as said earlier, they belong to the family of bony fishes, which means they have very little meat suitable for human consumption.

22 Related Question Answers Found:

• Is Costco farm raised salmon safe to eat?

  Yes , it is safe to eat Costco farm raised salmon !! it is antibiotic free and water in which they grow is made safe by continuous monitoring and regulating,, they provide fish with good food !!

• How do you defrost tuna quickly?

  Quick Thaw Method: Unpackage desired number of fish fillets and place in a sealable plastic bag. Remove as much air from the bag as possible and immerse in cold water for approximately 30 minutes.

• Does grilled fish need to rest?

  You cooked the fish for too long. ... Take the fish off the heat when it reaches an internal temperature of 140°F in the thickest part of the flesh. Then let it rest until it reaches 145°F, which is the USDA's recommended minimum internal temperature.

• How did my crayfish get pregnant?

  Crawfish eggs are typically laid and fertilised in the burrow where they become attached to the swimmerets on the underside of the female's tail. The hatching period depends on temperature and usually takes about 3 weeks.

• How many babies does a catfish have at one time?

  The number can be up to 50,000 eggs at one time. After the female has completed laying her eggs, the male catfish will fertilize the eggs. The entire process is completed within hours.

• Is it better to cook shrimp with shell on or off?

  Cook in the shell whenever possible, especially when you grill. The shells add a lot of flavor to the meat, and they protect it from quickly overcooking. ... But if you do choose to peel the shrimp before cooking, save the shells and freeze them to make seafood stock for chowders and stews.

• Does smoked salmon ever go bad?

  Yes, smoked salmon go bad but after some time. Depending on where you store, it may even last for months. So if you're wondering about smoked salmon safety, it lasts between 1-2 weeks when stored under normal conditions. ... You can also get between six and nine months of freshness when kept in a freezer.

• Do clownfish eat their babies?

  They will protect their eggs but once the eggs hatch, the babies are on their own. The fry can get eaten by other fish, swept away or even eaten by their own parents!

• Are oysters full of toxins?

  Shellfish Toxins Bivalve molluscan shellfish like clams and oysters obtain food by pumping water through their system and filtering out small organisms. If large numbers of the toxic algae are present in the water, then the shellfish can accumulate high levels of the toxin.

• Are giant catfish dangerous?

  People have even died from giant catfish attacks in Europe. Any form of natural water has the potential to be the home of a creature that poses a threat, whether it is a massive fish with ferocious teeth or a tiny parasitic variety that can make its way into, ahem, uncomfortable places on the body.

• Is there electric fish in Nigeria?

  A new species of electric catfish, Malapterurus minjiriya, from Kainji, Nigeria, is described and a key for separating it from the two other known species is given. Notes on some aspects of the biology of the electric catfishes in Lake Kainji, Nigeria are included.

• How do you make tap water safe for crayfish?

  You can use tap water, however, you will need to let the water rest for at least 24 hours, and this will help establish room temperature and such for the crawfish. Add small rocks or pebbles in the bottom of the tank and create a little place for the crawfish to hide, they love to hide.

• Why is tilapia disgusting?

  Farm-bred tilapia are said to contain high amounts of dioxin, an extremely toxic environmentally persistent organic pollutant. The source cited that these are lethal because they could cause the body to produce tumors.

• How long does it take to clean shrimp?

  It should only take 20-30 minutes.

• How long can sushi grade tuna last in fridge?

  (In general, raw fish that's refrigerated is safe for three days. Sushi made from cooked fish or vegetables can be eaten up to a full week after it was made if it's stored at or below 41º F, or about five days if your home fridge is set to a warmer 45º F.)

• What is the cheapest pet fish to buy?

  Budget-friendly fish

  • Barbs. The barb group's made up of a huge range of species, and there are some stunning colours and patterns among them. ...
  • Tetras. Great looking and low maintenance, this freshwater species can make a wonderful addition to your home. ...
  • Swordtails. ...
  • Molly fish. ...
  • Algae eaters. ...
  • Bettas. ...
  • Danios.

• How long can a tilapia live?

  Commercial species

  hidePrincipal commercial tilapia species
  Common name	Scientific name	Maximum age
  Nile tilapia	Oreochromis niloticus (Linnaeus, 1758)	9 years
  Blue tilapia	- Oreochromis aureus (Steindachner, 1864)	years
  Nile tilapia + blue tilapia hybrid	years

  1 more row

• Can you eat worms in oysters?

  The bigger question, are they safe to eat? Supan says yes. "They are absolutely harmless and naturally occurring," he added. "If a consumer is offended by it while eating raw oysters, just wipe it off and ask your waiter/waitress for another napkin."

• Do you kill crayfish before cooking?

  Purge crawfish right before boiling; if you do it any earlier, they will die. Crawfish need air to stay alive; do not let them sit in water for too long.

• Can you eat fish you catch in the ocean?

  There are some poisonous and dangerous ocean fish but, in general, when out of sight of land, fish are safe to eat. ... There are some fish, such as the red snapper and barracuda, that are normally edible but poisonous when taken from the waters of atolls and reefs. Flying fish will even jump into your raft!

• How do you wash your hands while fishing?

  Squeeze liquid hand-sanitizer onto your hands. Rub your hands together till dry. Rub your hands with toothpaste, then rub together, and rinse under water. Use a soap specifically made for removing fish odors, like De-Fishing Soap.

• Should swordfish be pink in the middle when cooked?

  The general rule for cooking these types of fish is that the flesh should be cooked until it is opaque and flakey. Secondly, can Swordfish be pink in middle? Summer and fall are peak seasons to buy it fresh. The meat, which ranges from white to light pink, darker just under the skin, is oily and rich-tasting.