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Crayfish

Crayfish (also called crawfish or crawdads) are freshwater crustaceans that look like a small lobster. Crayfish feed on plants, frog eggs, insects, and small fish. Crawfish boils and dishes with crayfish in them are very common in Louisiana. Louisiana supplies about 95% of the crayfish harvested in the US.

529 Questions

How do crayfish live?

actually crawfish are crestations. they are kind of like amphibians they live partly on water and partly on land. craw fish enjoy damp areas but they also need a dry area.

so just subduing a crawfish in just water will kill it. therefore the above answer is incorrect and you are not stupid. =) (=

anywhere in the water sometimes a creek i live near a creek and checked under rocks and saw a crawfish... so i got and made a trap put it set it and checked the next day

Are crayfish primary consumer?

The crayfish could be a primary consumer but it matters where it stands in that particular food web.

Does your crayfish need rocks when living in a tank?

yes so they can grip the bottom of the tank and they dont slip around

What do cave crawdads eat?

Crayfish are omnivorous and will eat a wide variety of foods, including plants, insects, frog eggs, small fish, dead plants and animals and worms. They commonly feed on submerged, decaying vegetation, deriving nutrients mainly from the bacteria and other decomposers associated with it.

Answer

Common Name: Crayfish (Crawfish, Crawdad, Freshwater Lobster, etc.).

A crawfish's favorite food is soft, decomposing plant matter; however, they will eat just about anything : algae, snails, insects, plants, dead fish, etc. Crawfish are cannibals and will even consume other crawfish that are molting.They will also take food and bury it near the entrance of their den, just like a dog buries a bone.

What are the function of the appendages of a crayfish?

The Antennules in a Crayfish, being short while the Antennas are long, are used to taste food.

What colour is the raw crayfish?

Most types of crabs are grey or blue, prior to cooking.

Where can you buy live crawfish in phila?

One place is www.lacrawfish.com or CajunGrocer.com or www.cajuncrawfish.com www.klcrawfishfarms.com www.cajuncrawfishco.com cajuncrawfishshop.com I know more hoped that helped if did not ask me anytime

Do crayfish have hearts?

The heart of the crayfish pumps to circulate the blood. The blood flows through the open cavities as there is a minimum of tubing in the crayfish. The circulation of the blood aerates and purifies it.

How long does it take for cray fish to give birth?

i have a pregant crayfish and i am wondering how long it will take until she has her babies?

Why are crayfish called crayfish?

They got their name because they are similar to a crab.

How many total legs does a crayfish have?

A crayfish has eight walking legs and eight swimmerets.

Does a crayfish have a backbone?

No, crayfish are invertebrate animals, they do, however have an exoskeleton which makes up for the lack of a backbone.

Why it is the crayfish is classified as a segmented animal?

A crayfish has segments, which are sections of a body that are separated by a crease, so it might be determined as segmented because it has only two so it may be classified but it might not. Worms have many segments.

Are crayfish good to eat?

If you like seafood such as lobster or shrimp, you will likely enjoy crayfish (also called crawfish or crawdad in the US). There are many ways to cook them in dishes or boil them in a flavorful broth and eat them out of their shells.

How many crawfish live in the world?

there are about 1,000,000,000 lobsters in the world ......A.C

Do crawfish make any noise?

Mine does. It makes a type of grinding sound and blues bubbles.

What is the difference between a lobster and a cray fish?

A crab has a round body where a lobsters body looks alot more like a giant shrimp with big pincher's crabs also have pincher's too!

When you boil a crab it becomes distressed and poises its meat.

Also when you boil a lobster it is blue when you put it into the pot/saucepan and pink when it comes out.

How do crawfish mate?

Male crawfish/crawdads produce a packet of sperm that resembles a small raspberry. They approach a female and place the packet at the base of the third peripod using a pair of modified pleopods (in English, that's underneath at the back end, where all the little paddles are). The female curls her abdomen under, and fertilizes the eggs in a special chamber there.

Can pregnant women eat crawfish?

Seafood is a great source of nutrients like omega-3 and protein.

DO NOT eat shark, swordfish,king mackerel or tilefish as these contain the highest levels of methyl mercury.

DO NOT eat fish caught by family or friends, stick to commercial fish.

Avoid RAW fish or under-cooked fish

What do you feed to crayfish?

I have a crayfish and its been alive for 4 years now. We feed it usually cheap goldfish, about a dozen 3xs a year or so. They also like earthworms, raw meat and anything else thats alive or lived at one time. They are bottom feeders so they will eat scraps

What type of anthropoid is a crayfish?

Crustaceans have five pairs of legs and are mostly aquatic. Most of the crustaceans we are familiar with are marine organisms such as shrimp, crabs, and lobsters. A favorite aquatic crustacean is the crayfish.

Crayfish are found on six of the seven continents of the world. They are known by many names. In the U.S. they are known as crawdads or crawfish. In parts of Europe and Australia, they are referred to as yabbies. No matter where you are from or what you call them, crayfish are intriguing. More than half of the more than 500 species occur in North America, with the majority occurring in Kentucky (Mammoth Cave) and Louisiana. Nearly all crayfish live in freshwater but a few can survive in saltwater.

Crayfish look basically like miniature lobsters and their colors can range from sandy yellow, green, white, pink, red, dark brown, and black. The average length for a mature adult is about 3 inches. Some do get larger than this. One of the smallest occurs in the southeast and measures only about 2.5 centimeters. Crayfish have a complex anatomy consisting of many parts. The head has two pairs of antennae and one pair of movable eyes. Attached to the thorax (middle part of the body) is a pair of claws and four pairs of walking legs. The claws are used for cutting, capturing food, attack, and defense against predators or other crayfish. A pinch to a human finger from a large crayfish can actually draw blood. In addition to their claws and walking legs, crayfish have other leg-like appendages. One group of these appendages is called bailers and they help to cycle water over the crayfish' gills. They also have five pairs of swimmerets underneath their abdomen. Crayfish have the ability to regenerate practically any appendage that gets broken off. They can regrow legs, claws,antennae, even eyes if they happen to get snipped off in a fight. They have a thick exoskeleton that provides protection and allows movement, but limits growth. As the crayfish grows it sheds its exoskeleton in a process known as molting. It then grows a new larger exoskeleton. Shortly after a molt, the new exoskeleton is very soft, making the crayfish much more vulnerable to predators. A crayfish may molt many times in its life. The average crayfish only lives about two years.

Crayfish live in a variety of aquatic habitats including swamps, streams, streams, and lakes. Several species live in streams of caves. Many will burrow into banks. Crayfish will often conceal themselves under rocks or logs to hide from predators or to ambush prey. They are most active at night, feeding on snails, algae, insect larvae, worms, tadpoles, and occasionally minnows. They will also eat decaying plant matter and debris. Studies have shown that older crayfish (one year old) tend to most actively feed from dusk to daybreak, while younger ones are more likely to be out on a bright sunny day. Crayfish generally walk along the bottom as they search for food, but if startled, can rapidly swim backwards using rapid flips of their tails.

Because crayfish are fairly short-lived, they have a high-volume reproduction rate. Crayfish will mate in October or November and the eggs will be laid in the following spring. The female will actually attach the eggs to her swimmerets, use her tail as a protective flap, and carry the eggs around with her until they hatch. A female may lay 10 to 800 dark brown eggs that will become translucent, as they get ready to hatch. When the eggs hatch, the newborn crayfish will remain attached to their mother until after their second molt.

Many different predators prey upon crayfish. Various game fish, particularly smallmouth bass, eat crayfish, as do many birds such as grackles, herons, cormorants and ibis. Raccoons, otters, and minks will also catch and eat crayfish. A lot of traditional Cajun dishes have crayfish as a major ingredient so humans also have an appreciation for these delightful crustaceans.

Crayfish are relatively tolerant of pollution with the exception of chemical pollution, which harms their delicate gills. The water must have plenty of oxygen in order for them to survive. They can survive a wide range of temperatures but are generally more active in warmer waters. As long as there is an adequate food source, crayfish will thrive.

So go out and look in your stream or lakefront area. If the habitat is good, there may be crayfish.

What does the thorax of the crayfish do?

First, when it needs to get away, it tucks in the abdomen so it can swim away backwards, really really fast... Also, the abdomen can stir up the dirt so the predator can't see.

Where are swimmerets located on the crayfish?

Swimmerets are located on the abdomen of the Crayfish