Q: If you buy in-person, make sure your fish and its tankmates are healthyif its tankmates are sick, there's a good chance your fish will be too. Ask the salesperson to feed the fish and make sure it responds normally to the food. Some physical and behavioral issues to look out for include: Very damaged, missing, or clamped fins Cloudy or bulging eyes Visible injuries or ulcers on the body Mucus An emaciated or bloated body Faded coloration Twitching or trembling Erratic swimming or hitting objects in the tank Rapid respiration Behavior that's out of character for the species, like a typically shy species seeming outgoing If you don't have a good fish store near you, buying your fish online might be your best option. Make sure to only purchase from reputable sites. Look at their shipping specifications and check for customer reviews and verifications to ensure it's a good site. One of the main drawbacks of buying online is that you can't see the fish in-person beforehand. If possible, ask to see the fish via photo or video call to judge its condition. " Once you've bought your fish, it's time to acclimatize it and transfer it to the tank! Place a clean, clear container below your tank, such as on the ground or a lower table. The container should be large enough to hold your fish comfortably. Acclimatizing is the process of getting your fish used to its new environment, including a new water pH and temperature. If you've bought a few fish, it's best to add them one at a time, starting with the least aggressive. Stretch a several feet of flexible airline tubing between the tank and the acclimation container. Tie 2-3 loose knots along the tubing and place the tank end 5 to 6 inches (13 to 15cm) below the water's surface. Wedge the tubing between the rim and cover to keep it in place. You can buy airline tubing at home improvement stores and online. If you have a flow-control valve or clamp to fit your tubing, you can attach it to the acclimation-container end of the tubing. If you use a valve, you don't have to tie knots in the tubing. Place the tank end of your tubing into the output end of your powerhead. Tighten or loosen your knots as needed to bring the flow down, so that 2-3 drips per second are falling into the acclimation container. You can also adjust the flow by using your flow-control valve. Don't pour extra freshwater or saltwater into the acclimation container. Pour the fish in with just its shipping water. The fish will probably be nervous and scared, and may even try to jump out of the container. Draping a towel or cloth over the container will lessen the stimulation and give it time to get used to its new surroundings. Keep an eye on the water in the acclimation container. Once it's doubled in volume, use a clean bowl or turkey baster to remove about half of the water. Put the tubing back in place and start the dripping once more. Depending on how big your acclimation container is, this might take an hour or more. Be patientproper acclimation is essential to the health of your new fish. Once your water level is back up, use test kits to check the amount of ammonia, nitrite, nitrate, pH, specific gravity, and temperature in the acclimation container's water. If they're identical to the aquarium's water parameters, it's time to transfer your fish! If the acclimation container's water parameters don't match the aquarium's, continue your cycle of dripping, removing water, and testing until they do. Carefully scoop up your fish with a clean fish net and slide it into your aquarium. You can also pour the fish into the tank with its water, especially if your aquarium water needs to be replenished after dripping through the tube.
A: Purchase your fish in-store so you can check their health. Buy your saltwater fish online for convenience and a greater selection. Set a clear container below the tank to be the "acclimation container. Place airline tubing between the acclimation container and tank. Pour the fish and water into the container and start the water flow. Drape a towel over the acclimation container to keep the fish calm. Let the water drip until there's twice as much water in the container. Test the water once it's doubled again. Move the fish into the tank with a net.

Article: You can also run programs from the command line, in that case any text-editor will suffice. It might be handy to choose an editor which supports syntax highlighting and line-numbers. Most programmers find that unix-like systems (linux, OS X, BSD) are the best environments for development. The main file must include a function called main(). This is where execution of the program begins. From here, you should be calling functions, instantiating classes, etc. Other files of your application as well as libraries can be included into this file. Insert your code or the program that you need to build (see below for a few examples). Learn the syntax, semantics, Object-Oriented Programming paradigms, data striations, algorithm designs such as linked lists, priority queues, etc. C++ is not an easy language to program in, but doing so teaches you the fundamentals that extend to all programming languages. Explain what your functions do and what variables are for. Choose clear names for variables and functions. Capitalize the names of global variables. In general: make sure that anyone reading your code can understand it. Again, see the examples below.
Question: What is a summary of what this article is about?
Download a C++ IDE (integrated development environment) such as Eclipse, Netbeans, and CodeBlocks, or you can use a plain text editor such as Notepad++ or VIM. Create a main program file. Begin writing your program. Insert comments in your code. Use proper indenting in your code. Compile your code with g++ main.cpp

Q: With many fish, like koi, females tend to be larger than the males. This is especially true during spawning time, when females have large abdomens. To check the size of a fish in the same species, you can look at them when they're near each other, take a picture of each one, or catch one in a net to quickly use a ruler to measure its length and width. This is often caused by the fact that the female carries the eggs in her abdomen. Once the eggs are laid during spawning season, the females and males can return to the same size. If you catch a fish with a net to measure it, try to keep the fish in the water and place the ruler in the water to measure it. You will likely be able to get a general idea of the length and width. Look carefully at the face of the fish just between the eyes and above the mouth. If it has a large, protruding bump, there's a good chance that the fish is a male. This bump is called a "nuchal hump," and it's present on many types of fish, like the tilapia, angelfish, oscar, and discus. Some species of fish don't have a nuchal hump, but the presence of one is normally a great indicator that you have a male fish. Male fish tend to grow bristles, bumps, or shiny scales during breeding season to attract females. Females can sometimes also grow these attributes, but the male versions tend to be larger and more pronounced to attract attention. For example, male pleco fish will grow long bristles on their pectoral fins and around the edge of their mouth and head. While females can grow similar bristles, theirs tend to be smaller.
A:
Compare the size of the fish during spawning season. Look for a bump on the forehead of the fish to identify a male. Watch for designs and growths during mating season.