10-30-2009, 10:02 AM
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The food menu totally depends on the fish we are dealing with. Actually, let's take another example what makes food concerns matter a lot contrary to most people think. Fancy goldfish for instance, are predisposed to buoyancy issues due to their compressed organs as a result of selective breeding. I keep several goldfish myself focusing mostly on fancy types. Here you may find out the likes of ryukins, tikus pearlscales and anything else with an extremely round body will have very compressed GI (gastrointestinal) tract. You will find that hardly anyone keeping fancy goldfish who have a history of buoyancy issues, will ever touch flakes, floating foods and freeze-dried foods again. The number one issue with the abovementioned foods is the air they add up when the fish ingests food from the surface. Air is also tightly compressed in freeze-dried stuffs which is another reason to avoid them. Aside from that, the flakes also expand rather slowly and perhaps more dangerously in the GI tract of the fish once the fish ingests the flakes as quickly as they are dropped. Another reason why flakes are often avoided is the fact they needed to be presoaked to avoid adding the air. The downside of this is presoaking destroys the vitamins completely by leaching them out since vitamins are water soluble in themselves. It could be remedied by dipping in vitamin liquid supplements although not everyone tends to go with this method which makes pellets much more appealing to them. With vitamins also easily destroyed by exposure to light and air, flakes degrade quicker than pellets do. I make gel foods for my goldfish. The gel foods consist of vegetable matter, multivitamins, calcium tablets, acidophilus, sardines/tuna/mackerel, Mazuri gel food powder, etc. Those are very nutritious selections although a few vegetables and fruits are often avoided due to high sugar and starch levels that may have detrimental effect to the fish. As far as guaranteed analysis is concerned, it totally depends on the needs of the fish. Most foods with protein content by as much as 50% are suitable for young fish but not adults. Adults cannot utilize the excess proteins which are simply discharged resulting in higher pollution rate. Aside from that, a majority of commercial foods are very low in fiber. Most fish need high fiber to be able to discharge excess foods or they may likely suffer a higher incidence of bloat or constipation.