Discus Fish For Sale - Sarcophyton
INVERTEBRATES The leather corals of the Sarcophyton genus will not tolerate being dose to Coelenterates highly prone to stinging. In their natural habitat, Coelenterates feed on animal plankton, but these are difficult to supply in an aquarium. example, is carrying out research in this field, using a 40 m3 tank containing several tons of corals, which are nurtured and bred. Until recently, raising corals on this scale in captivity was impossible, above all because of their very great sensitivity to nitrates (NO3-). Scientists solved this problem by allowing these nitrates to turn into nitrogen gas (N2), thanks to the anaerobic bacteria which survive at the bottom of the tank, where the oxygen levels are low. The nitrogen produced by the metabolism of these bacteria then passes into the atmosphere. This complicated technique is beyond the reach of most aquarists, however experienced they may be. Feeding Coelenterates By filtering the water, the Coelenterates trap small suspended particles, particularly the crustacean zooplankton. Collecting, keeping, and distributing plankton is not a task to be taken lightly, and it is best to look for other solutions. However, it must be made clear that commercial foods on the market provide little more than a stopgap. It is possible to use rotifers or freshly hatched brine shrimp nauplii, normally used as the main food for fish, but not everybody breeds these animals. There is another food which is available to all hobbyists, as it is inexpensive, easy to make, and can be frozen: it is usually called mussel choppy. Mussels are not only cheap but also rich in proteins, carbohydrates, mineral salts, and vitamins. Other possi- FOOD FOR SPONGES AND COELENTERATES: A RECIPE Ingredients: - mussels or cockles; - white fish, i.e. lean and free of lipids; - shelled shrimps in cans (optional). Cook the mollusks and fish. Put the shrimps in boiling water for 1-2 minutes. Remove the mollusks’ shells. Mix all the ingredients thoroughly. You can add a vitamin solution, flakes or granules of fish food, boiled spinach, or the special foods for invertebrates available commercially. If the paste is too thick after mixing, thin it with sea water. Pass the mixture through a sieve. What is left behind in the sieve can be distributed to anemones or small fish; this puree can also be frozen. Allow the puree to stand for several hours in the refrigerator, then discard any excess water. The resulting paste can be used straightaway for feeding, or can be frozen. It is best to put the food into the aquarium at night, 1 or 2 hours before switching off the lights. Switch off the filters, pumps, and aeration for a moment. Thaw the food, if necessary, and distribute the equivalent of one tablespoon of the prepared liquid for every 200 liters of water. Deposit the food above the invertebrates with a narrow, rigid tube. The filtration and aeration systems can be switched back on a few minutes afterwards.
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