The St. Johns River (Spanish: Río de San Juan) is the longest waterway in the U.S. condition of Florida and its most critical for business and recreational use. At 310 miles (500 km) long, it winds through or outskirts twelve provinces, three of which are the state's biggest. The drop in rise from headwaters to mouth is under 30 feet (9 m); like most Florida conduits, the St. Johns has a low stream rate 0.3 mph (0.13 m/s) and is regularly depicted as "lethargic". It is accepted to be one of only a handful couple of waterways that stream north, in spite of the fact that there are several the kind around the world. Various lakes are framed by the waterway or stream into it, however as a stream its largest point is about 3 miles (5 km) over. The tightest point is in the headwaters, an unnavigable bog in Indian River County. The St. Johns seepage bowl of 8,840 square miles (22,900 km2) incorporates some of Florida's real wetlands. It is isolated into three n...
Food must provide fish with the elements needed to "build" their body (proteins) and the energy (from proteins, carbohydrates, and lipids) required for its smooth functioning. Feeding a fish properly ensures that it will grow satisfactorily, as well as facilitating its reproduction and helping it to combat disease. Quality and quantity are two important concepts in feeding: an aquarist must learn to avoid over-feeding and to diversify the food supply. AQUARIUM FISH DIETS AND NUTRITIONAL REQUIREMENTS With regard to fishes' feeding habits and dietary requirements, there are three main groups: - Carnivores, which feed on worms, crustaceans, insects, or other fish; - Herbivores, with a diet mainly comprising vegetable matter (plants, algae) which they graze or grind; - Omnivores, which have a very varied diet as they eat both animal prey and vegetable matter. In practice, diets are not always so easy to define. In a natural setting fish eat what th...