19/04/2023
HOW TO TAKE CARE OF CRAYFISH:
Crayfish, also known as crawfish, crawdads, and mudbugs, are freshwater crustaceans that can easily be kept in a home aquarium. All you need to raise one of your own is a roomy tank, the right kind of food, time, and attention. Crayfish make excellent pets, and can often be seen building little hills, mounds, digging, hiding among shadowy rocks and plants, and burrowing in the gravel at the bottom of their tanks.
1.) Set up a tank to house your crayfish. Generally speaking, the tank you choose should be large enough to hold at least 5β10 gallons (19β38 L) for each crayfish inside. However, a 15β20 US gal (57β76 L) tank is ideal, especially for larger varieties. An air bubbler or long bubble wall is also a must, as itβs possible for crayfish to drown if they stay submerged for too long without a separate source of oxygen.
Crayfish thrive in cool conditions like mud flats and riverbeds, so stay away from heated aquariums.
Look for tanks that feature built-in aeration and filtration units to keep the water clean and circulating properly.
2.) Fill the tank with fresh, well-balanced water. Crayfish prefer water with a neutral pH (around 7.0). Ideally, the temperature of the water should remain somewhere between 70β75 Β°F (21β24 Β°C). You should have no problem keeping the water at the right temperature if youβve set up your tank indoors.
A pH testing kit can come in handy for determining how acidic or basic the water in your tank is. You can typically find these kits in the fish section at pet stores, or wherever pool supplies are sold.
Avoid adding objects like seashells to your tank, as foreign minerals can throw off the pH of the water.
3.) Buy or catch a crayfish. You can often find crayfish for purchase at marine shops that sell tropical fish, as well as some pet stores. Before you start shopping around, do a little reading on the different species and their individual needs. Itβs a good idea to start with a single crayfish until you have an understanding of how to properly look after them.
4.) Change the water in the tank at least once a week. Crayfish generate large amounts of waste products that can be taxing on standard aquarium filtration systems. This means youβll need to stay on top of your water changes in order to ensure that you crayfish enjoys a clean living environment. To change the water in your tank, first drain ΒΌ-Β½ of its total volume, then slowly top it off with fresh, clean water.
If your tank doesnβt have a filter, it may be necessary to increase the frequency of your water changes to twice a week.
Stick to mounted tube or sponge filters only. Crayfish like to dig, which can end up jamming undergravel filters.
5.) Incorporate a few natural environmental features. Add elements like rocks, water plants, or lengths of PVC pipe to the bottom of your tank. That way, your crayfish will have a place to play, burrow, or hide away for a while. Large structures like hollow rocks, gerbil tubes, or enclosed containers are particularly good for making crayfish feel safe, especially during their vulnerable shedding period.
Shut off any surrounding light sources or keep one side of the tank covered to minimize the amount of light that gets in. Crayfish like it dark.
6.) Give your crayfish a small amount of shrimp pellets once a day. Sinking shrimp pellets or lobster bites should make up the majority of your crayfishβs diet. Pellet-type foods are high in protein and contain all the nutrients crayfish need to grow and develop healthy shells. Sprinkle the pellets around all of your petβs favorite hiding spots to make it easy for it to get to them.
Crayfish can also have frozen aquarium foods occasionally, such as daphnia, bloodworms, and brine shrimp. Use vegetables to supplement your crayfishβs diet. Every now and then, cut some leaf lettuce, cabbage, zucchini, or cucumber into small strips and drop them to the bottom of the tank. Offerings like peas, carrots, and sweet potatoes are also okay. Crayfish love munching on plant matter, so donβt be surprised if they disappear in a hurry! Itβs perfectly fine for crayfish to eat spoiled or decaying organic matter. In fact, treating your crayfish to veggies that are going bad is a great way to kill two birds with one stone.
7.) Avoid overfeeding your crayfish. One or two shakes of shrimp pellets or a smattering of vegetables per day should be more than enough to keep your crayfish satisfied. Remove any uneaten portions of food soon after feeding your crayfish. Anything left sitting at the bottom of the tank will quickly decompose, dirtying the water and making more frequent changes necessary.[9]
If you're caring for more than one crayfish (which isnβt recommended), itβs okay to double the amount of food you administer. Still, keep an eye out for leftovers and scoop them out whatever remnants you find quickly.
Overeating can actually be bad for crayfish, as it causes their exoskeletons to become soft and weak.
8.) Provide your crayfish with the right conditions as it molts. Every few months, your crayfish will shed its outer shell to make room for a new one large enough to accommodate its growing body. You may be tempted to remove the old shell afterwards, but donβt. It will feed on the shell for several days in order to extract the nutrients and minerals it needs to create a strong new layer of armor.[10] [11]
Donβt bother feeding your crayfish in the first 3-5 days after it molds. During this time, it will only eat the old exoskeleton.[12]
Add a few drops of potassium iodine to the tank when your crayfish begins exiting its shell. Molting crayfish have been known to die off as a result of iodine deficiency. You can find potassium iodine at any store that stocks aquatic pet accessories.[13]
Your crayfish will be especially vulnerable to malnutrition and attacks from other fish with its soft body exposed.
9.)Keep your tank covered to make sure your crayfish doesnβt get out. Crayfish are natural explorers, which means they can turn into little escape artists when no one is looking. Ideally, you should opt for a tank with a removable lid to guarantee that your cray stays confined. If thatβs not an option, use small pieces of sponges to seal off any openings near the top of the tank, especially around the filter. Don't use pieces of plastic, or aluminum foil, which that will be harmful to crays if they eat it.
Be vigilant about blocking off all potential escape routes. If your crayfish manages to find a way out of its tank, it can dehydrate and die in just a few hours.
Never put a runaway crayfish back in its tank immediately. Instead, place it in a shallow container with just enough water to cover it. Its gills will need time to get acclimated to the water againβotherwise, it can actually drown when fully submerged.