moderately aggressive communities.If the tank is new, and everything was

moderately aggressive communities.If the tank is new, and everything was recently purchased, Cops Robbers chances are you don't actually need to put within a catfish just yet. I prefer to let the tank begin to add some organic wastes as the tank matures for the first six to eight weeks. Only after the Nitrogen Cycle has been started and matured would I normally consider adding bottom fish of any kind. The tank doesn't need the added fish load, and the filter is so clean it should be able to handle the wastes while everything settles and gets into balance.  Since I do not feed bottom fish separately, I feel it is best to let the system get a little bit of waste in the bottom for a scavenger to find before they are considered as new arrivals.For most common community aquariums, I use one of the various Corydoras sp. armoured catfish as the bottom feeder of selection. There is a huge variety of choices in these dwarf catfish that will make one of them the perfect complement to your more compact aquarium community. You can pick between solids, stripes, blotches, albino and a lot of other possibilities.These are scaleless catfish. If you should have a problem with Ich or other diseases and need to treat, read the directions on any medication very carefully. Remember that they are quite vulnerable to many of the medications typically used to kill many parasites. Generally half doses are the maximum with these fish in the tank - but always follow the written directions to be safe.One of the main problems new aquarists face is the presence of algae. I have kept fish for forty years or so, and I have grown quite used to seeing it in the tank and accept it as natural. Many people don't. http://www.sexy007.com/Wholesale-sailors-sea_c29 They try to use a bottom fish to eliminate it. As mentioned, the various Plecostomus types are the very best of these. They are so ugly; they are interesting. Personally I enjoy them immensely. The problem is that many aquascapes are maintained in an acid range, and this is deadly to alkaline loving Plecostomus. When placed in acid water they