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There were showed influence of the points (local and city reception basin outflow) and the areas (recreation area and wasteland) differentiation of pollution sources on the concentration of nitrogen and phosphorus compounds in water of Mały Jeziorak Lake. There were analyzed NO₃⁻, NO₂⁻, NH₄⁺, total P and PO₄⁻³ content. Results of the studies were indicated that the most components concentration was...
This study analysed the rearing of Black Molly Poecilia hybrids. It is a crossbreed of sailfin molly Poecilia latipinna and short-finned molly Poecilia sphenops. Black mollies are very popular aquarium fish which are frequently put into marine aquaria to speed up the maturation of such aquaria. Without being acclimatised to high salinity, the fish are put into water with a salinity of SG 1.025 or...
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