According to the Virginia Department of Game and Inland Fisheries, pond fish may die for a number of reasons, including low levels of dissolved oxygen, pollutants, disease, temperature extremes or natural causes. The department explains that when fish in a pond begin to die or languish, it is imperative for pond managers to review these common factors to ensure that they are within recommended parameters. Often, the conditions causing the problem can be corrected.Know More
According to the Warnell School of Forestry Resources, a division of the University of Georgia, Athens, oxygen depletion is a result of demand outstripping the pond’s supply. While the micro organisms and fish in the pond consume oxygen, the only organisms that produce oxygen are the plants. Additionally, the movement of air over the water can increase the amount of dissolved oxygen in the pond. Frequently, according to the Warnell School of Forestry Resources, fish kills occur during the summer, when pond managers overstock the pond or treat it with weed-killing chemicals -- both of which may reduce the available oxygen.
Outdoor Alabama cautions pond managers to be observant for the signs of low dissolved oxygen in ponds, such as fish swimming near the surface or gulping air. Usually, the largest fish die first.Learn more about Aquatic Pets
There are common tell-tale signs to help in diagnosing if your fish is ill and they are as follows: clamped fins, frayed fins, bloating, enlargement of eyes, erratic swimming, gasping for air at the surface of the water, scraping on plants and filters, loss of appetite, white spots on fins/body, parasites on body, and normally active fish who remain still. Conditions or symptoms may vary.Full Answer >
To breed tropical fishes, set aside a breeding tank, then choose the best parents from both sexes, and settle the pair in optimal conditions. Be sure to add hiding places in the breeding tank or aquarium like aquatic plants, rocks, or some toy structures like castles. Always prepare high quality food for the breeders and as much as possible, simulate the breeding season in their natural habitat.Full Answer >
According to Practical Fishkeeping, the first sign of pregnancy is that the fish's belly enlarges and appears rounder. Pregnant fish also exhibit a black spot on the belly called a gravid mark. As the pregnancy progresses, the fish's belly becomes very large and distended, and the gravid mark becomes larger and more obvious.Full Answer >
A frantically swimming fish is likely experiencing significant stress. Other stress symptoms include hitting the bottom of the tank, locking its fins to its side, and rubbing itself on gravel or rocks.Full Answer >