Fish Disease

Fish are susceptible to numerous diseases, some of which are highly contagious, and prompt treatment is needed to prevent losses. It must be remembered that imported fish can be swimming in your tank within a few days of being caught in an Asian swamp or an Amazon pool, due to speedy air-freighting, and you may unwittingly introduce diseases develop-in in an apparently healthy fish. Conscientious dealers quarantine their fish, but there are some dubious sources from which diseased fish are common. Luckily, most of the common diseases are easy to treat.

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Freshwater Aquarium Plants

All green plants live by means of photosynthesis. Materials absorbed from the roots — or, in the aquarium, from the sure-rounding water — are used by the plant, together with sunlight or artificial light, to make the food the plant needs. Importantly, the plant takes in carbon dioxide and produces sugars, which it uses, and releases oxygen through tiny pores in the leaves. You can seethe process taking place in the aquarium: tiny bubbles of oxygenate produced on the leaves of certain plants in bright light. This provides a valuable source of oxygen for the fish. Further benefits that the carbon dioxide which the fish produce as a waste product is used by the plants. Moreover, the plants use the break-down products of fish wastes and decayed material.

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Setting Up Freshwater Aquarium

You should plan your new aquarium carefully before starting to set it up: it will be difficult to make changes later.

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Freshwater Aquarium

Most fish selected by importers and dealers for the home aquarium is highly adaptable to various conditions, and they need to be. In nature, freshwater environments are subject to sudden violent fluctuations in temperature and water conditions due to rain and seasonal changes, and the fish are adapted to cope. Thus it is relatively easy to keep freshwater fish from various contrasting habitats together in the aquarium, under ‘average’ conditions, although, for perfect health or for breeding, more insight into their real requirements may be necessary.

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Fish Problems

Quarantine Fish

It is bad practice to introduce a fish straight from the dealer’s tank into an established aquarium. However healthy it looks, a fish may carry a disease which takes several days to develop. Sometimes the stress of being moved will cause an underlying disease to become more severe. It is bad enough to lose a newly purchased fish through disease, but it can be a tragedy if a whole thankful disaffected.

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How to Introduce Fish to an Aquarium

Part of the secret of successful fish-keeping is to buy healthy fish to start with. Just like any other animal, healthy fish actually look healthy. Examine the fish in the dealer’s tank carefully. Look for those which are brightly colored and bold with erect fins; avoid small or stunted fish. If possible, ask for them to be fed while you watch so that you can be sure they are feeding well. And make sure that the dealer catches the one you actually want.

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Aquarium Maintainence

In addition to the continuous cleaning action of filters, a certain amount of other routine cleaning-up is required in both freshwater and marine aquarium. Some debris may be too large for the filters to cope with, so manual cleaning will be required. The simplest method of clearing debris too large for the filters is to use a syphon. Take a length of plastic hose long enough to touch the bottom of the tank on the inside and to hang down well below the level of the bottom on the outside. If you suck the dangling end of the tube so that water is drawn up the tube (and take your mouth away before the column of water reaches it!), a jet of water will be siphoned out, and continue to flow as long as the end of the tubes held below the level of the tank bottom. Use the part of the tube inside the tank like a vacuum cleaner to suck up all visible debris, and direct the jet of water leaving the siphon into a bucket for disposal. Don’t hold the end of the tube too close to the gravel, plants or fish: the suction is quite powerful and could cause damage.

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Fish that Eat Feces

Within the restricted environment of the aquarium there take place several complex processes which need to work efficiently if the tank is to remain healthy. Both fish and plants have some specific requirements, and the tank must be set up in accordance with these.

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Water Hardness

Natural water contains a variety of dissolved substances which affect its characteristics, and this intern can have a drastic effect on the fish living in it.

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