Other fish, however, need either cold or warm water to survive. Trout is an example of this. You will only find trout in cold water. Your best bet for finding a certain type of fish is to learn about the type of water it prefers. They are most often found in water that is close to their preferred temperature. None of the principles concerning live bait are clean or nice, but they are mandatory. You should never handle live bait when your hands are dry. Bait has a slimy layer on the outside, which is protective as well as inviting to predators, and if your hands are dry you will risk removing that layer. If you are running short on live bait, try to save the bait that dies in your live well or in a nearby bucket. The first thing that you need to do before you attempt surf fishing is to prepare ahead of time. Most places will require you to have a fishing license. If you get caught without one, the fine will more than ruin your mood. You will need to find out as much information as possible about the best times to go surf fishing. Locate bedding catfish by running your bare hands along the river bottom in search of an opening. For a bottom-feeding fish, the catfish is rather clean and delicate. Openings are easy to find because the catfish will continue to clear its home and area. Some experienced grabblers plan their trips during the winter when water levels are low, where it is possible to see potential hideaways that will soon be submerged. The blue marlin is known for its ability to fight, so you must be willing to match the marlin s will to live in order to take the sport seriously. Just like any other fish, the importance of learning the habits of the blue marlin is essential before trying to make them submissive to a hook. When marlin are in their primitive habitat they will feed on many things including mullet, cero, whole ballyhoo, dolphin, flying fish, bonito, skipjacks, squid and Spanish mackerel. The last thing that you will want is to break down at night. You should be well aware of what you have and do not have in your tackle and toolboxes. Light sources are obviously very important to night fishing. Many anglers will use black lights and some sort of fluorescent line. When the line is under the black light, it will have a neon glow and make subtle movements more visible.