Archive for the ‘water supply’ Tag



Biologists tell us that bluegills prefer water that is deep and clean with a pH of 7.2. Most of the lakes, ponds and unused strip pits of southern Illinois fit that description.

The need for such an environment has resulted in bluegills becoming to the war on terrorism what the canary was to early coal miners.

The miners would take the birds down in the ground. If there were a gas leak, the birds would be the first to succumb and their death would alert the miners to the danger.

When it comes to eating habits, bluegills are about as selective as a junkyard dog in what they will or will not bite. They eat: worms, crickets, aquatic nymphs, larvae, shrimp, crayfish tails and small fish. Their eating habits make them such a sucker for artificial baits like spinners and plastic grubs. But, when it comes to their environment there is another story.

Bluegills are known for thriving in clean water as well as a fighter on the end of a fishing line. Now they have a new job in the front lines of the war on terrorism.

Several major cities across the country have employed this member of the sunfish family in protecting water reservoirs. The fish are kept in tanks with constantly replenished water from the city supplies. Their sensors register change in their breathing, heartbeat and swimming patterns. These changes are known to take effect when the fish is exposed to such pollutants as: cyanide, diesel fuel, mercury and pesticides.

As long as the fish are stress free the water supply is OK. When minute toxins enter the water the fish become stressed and alert humans monitoring the water supply.

A member of the sunfish family, bluegills are sometimes referred to in southern Illinois as bream or brim. They are a flat, muscular fish with a dark olive green back and dark-blue vertical stripes on the sides. The breast of a male fish is bright red-orange while the females display a dull yellow color. The chin and lower portion of the gill cover is blue, giving rise to the name bluegill.

The long growing season and abundance of desirable clear water in southern Illinois has produced the healthy populations of these fish. Their aggressive feeding behavior is an indication that the bluegill does not flourish due to it intellect. They will attack an artificial lure twice their size and are often caught by bass anglers using spinner baits.

Bluegills are often seen as forage fish for larger predators such as catfish, bass and Muskie. It is only their ability to reproduce faster than other fish can eat them that maintains this fishery. Bluegills will begin reproducing at age l and a female lays about 18,000 eggs per year. The spawn begins about the time of the first full moon in May and can continue through the summer with the eggs being hatched in four to seven days after they are laid. The most active spawning takes place during the period of three to four days either side of the full moon.

During the period after the spawn, bluegills seek comfort in the shallow water early in the morning and late in the evening. During the day they will seek deeper water structure or suspend in open water. Usually, they will be schooled up. If an angler catches one he will catch many in the same spot or very close to it.

Bluegills do best in lakes with simple populations of fish without common carp or gizzard shad. For this reason they tend to be stocked into lakes with only bass. Biologists find that they can better control the populations of both species with just the two with which to work.

Ultra light tackle is best for bluegill fishing. The light rod and reel spooled with two to 4 pound line will produce a challenging fishing experience for beginner and expert alike. Fine wire hooks in number six or eight sizes are ample to catch these scrappy characters. The wire hooks can be pulled free when snagged in some underwater vegetation. They straighten out and can be just bent back into shape with the fingers.

Bluegill fishing is popular with children because they are so easily hooked and tug aggressively on the line. They are popular with adults because they provide an excellent meal at the end of a day’s outing.


%d bloggers like this: