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The total water hardness and pH during the egg development in selected aquarium fish species
FRANTL, Zdeněk
Objectives of thesis: 1.To evaluate the effect of pH and total hardness of water on the development of eggs in aquarium fish Corydoras paleatus, Corydoras paleatus albin, Tanichthys albonubes, Tanichthys albonubes gold, Aphyosemion gardneri, Aphyosemion gardneri gold. 2.Recommendation of optimal values of total hardness of water and pH for successful development of eggs for each monitored aquarium fish. Based on published data in available literature sources and on own experiments, it was evaluated how total water hardness (CM) and pH influences development of aquarium fish eggs of Aphyosemion gardneri, Aphyosemion gardneri gold, Tanichthys albonubes, Tanichthys albonubes gold, Corydoras paleatus, Corydoras paleatus albin.
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Verification of possibility to breed chosen aquarium fish species in outdoor basins
DENKOVÁ, Adéla
The aim of the work was to find out the possibilities of outside breeding of chosen fish species: Phalloceros caudimaculatus, Gambusia affinis, Danio rerio, Macropodus opercularis and Tanichthys albonubes. Fish were placed into basins and left there for five months (may ? october). Water temperature was measured once a week, water parameters ( pH, temperature, conductivity, oxygen) were measured once a month. Fish were netted after air temperatures decreased nearly on the zero point. They were counted, results were put into graphs or tabs.
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