In one sentence, describe what the following article is about: You can purchase flake food at a pet store or fish shop to use as a basic, daily food supply. While guppies will eat any type of flake food, high quality brands that contain both protein and vegetable matter are best. Flake food intended for tropical fish often include natural color enhancers that will make your guppies appear brighter and more colorful. Do not purchase fish food in pellet form, as this will be difficult or impossible for guppies to eat with their small mouths. If you purchase more flake food than you will use in a month, freeze the excess to preserve nutrients. Thaw another month's supply a couple days before you need a refill. Drop a tiny pinch of flakes into the water and watch the guppies eat. They should be finished with the meal in about 3060 seconds, and certainly no longer than a few minutes. You may decide to feed them once or twice a day, as long as you do so in appropriate amounts. It is easy to feed guppies too much food, and difficult to feed them too little. Guppies will continue to eat or search for food even when they do not need it. Do not feed your fish an additional meal because the fish appear hungry. In fact, guppies that actively seek food will prevent food debris from building up and dirtying your water. While guppies will survive on flake food alone, live or frozen plants and animals contain extra nutrients that are ideal for supplementing a flake food diet. Replace one flake food meal every 27 days with no more treats than the guppies will finish within 60 seconds. Any of the following are appropriate treats, and most can be found at fish shops: Baby brine shrimp contain mostly protein, and are ideal supplements if your flake food is high in vegetable content and low in protein (40% or less). They are available in live, frozen, or flake form. Blood worms or mosquito larvae are good treats that you can catch yourself by running a net through standing water. Acquire small quantities of larvae at a time to prevent them hatching into mosquitoes. Earthworms are also appropriate, but must be shredded and rinsed before feeding to the guppies. Feed your guppies shucked peas, shredded lettuce, or finely chopped cucumber, especially if their flake food is high in protein but low in vegetable content. Many other types of fish food exist, and fish store employees or other guppy owners may recommend other types of treat. However, you should try to avoid tubifex worms and daphnia, even if recommended to you. While guppies will eat them enthusiastically, tubifex worms sometimes contain lethal bacteria. Live daphnia will only cause harm in large quantities by removing oxygen from the tank, but they are typically more expensive and difficult to raise than other live foods. Because guppies have such small stomachs but still eat large quantities of food if available, overfeeding is common. If you notice any of the following signs, reduce the number of meals you feed them or the frequency of their treats. Some guppy owners only feed their fish 6 days a week, letting them go hungry on the seventh for their health. Tubes of waste dangling behind the fish are a sign of a blocked intestine from overeating. Adult male guppies develop a "potbelly" or bulging chest if they have too much fat in their diet. Reduce the amount of food and replace fatty treats such as blood worms or beef heart with crumbs of fat-free ham. If your tank water gets cloudy and dirty frequently, excess food or waste may be the cause. As a general rule, you should change 2030% of the water in your tank about once every 12 weeks, or more frequently for crowded tanks. . Healthy, adult guppies can last a week without food before experiencing any lasting effects, so if you are only going to be gone a few days, consider simply not feeding them. For a longer trip, one of the following methods is recommended: Use an automatic feed dispenser to dispense food at regular intervals. Make sure you supply enough food for the whole time you'll be away, and set the dispenser to release food once or twice a day. Test a feeder block or gel feeder before leaving. These blocks of dry or gel-covered food are left in the tank and eaten slowly. However, the dry blocks may cause dangerous chemical changes, while the gel variety sometimes go ignored. Test either variety for a few days before leaving so you can be sure there are no problems. Have a friend or neighbor feed them their usual flake food once every two or three days. Because inexperienced feeders often give too much food, it's best to place each pinch of food in a pillbox or other container with the day of the week carefully marked on it. Make it clear to the caretaker that overfeeding could kill your guppies.
Summary: Purchase flake food made for tropical fish. Feed the guppies a pinch of flake food once or twice a day, preferably in the morning and at night, leaving a twelve hour difference between the two. Replace the occasional flake food meal with more nutritious treats. Avoid tubifex worms and live daphnia. Watch for signs of overfeeding. Consider feeding methods for vacations longer than one week

In one sentence, describe what the following article is about: Don't do this unless you have something separating you from the person knocking, as they could forcefully push themselves in once you've unlocked and opened the door. If the person knocking is someone you don't recognize and they're claiming to be a police officer or utility worker, ask them to show you the proper badge or paperwork to prove their identity. Grab their credentials through the crack in your door or examine them closely through the security door to see if they're valid. Be skeptical of wrinkled or dirty uniforms. If someone is claiming to be a police officer, check to see that their police badge isn't a fake and that they have the proper police gear like a hat, radio, and utility belt. If you see anything that looks off, call the company the person claims to be with or contact the police and ask them to verify their identity. Have them wait outside while you make the call and don't open the door. Don't feel pressured to let them inside while you place the call. You can say to the person outside: "I just called for an ambulance/tow truck. They'll be here any minute to help you." If you've determined the person outside has a valid reason for being there, go ahead and open the door. Let them in if they need to come inside, but keep an eye out for any suspicious activity once they're in your home. If you notice something suspicious or your feel uncomfortable at any time after you let someone in your home, leave immediately. Go to your neighbor's house or a safe public place and call the police.
Summary:
Open the door a crack if you have a security door or chain lock. Ask to see their credentials. Look for signs that they aren't who they say they are. Offer to call for help if someone is hurt or their car is broken down. Open the door once you're confident it's safe. Leave immediately if you feel like you're in danger.