NOVELTY - The floating water aerator, which is solar- and/or wind-operator and enables year-round operation, for improving the oxygen content in the water, comprises a floating base (1) consisting of non-degradable material e.g. aluminum or plastic and water-resistant wood e.g. larch. A sub-structure in the floating base consists of non-degradable heat-insulating material e.g. Styrodur (RTM: Extruded polystyrene foam). The heat insulating material layer prominently contributes for floating-speed and assures free-holding of ice under the floating base in a required thickness.    USE - Floating water aerator, which is solar- and/or wind-operator and enables year-round operation, for improving the oxygen content in the water for the growth and health of fish.    ADVANTAGE - The floating water aerator is capable of ecologically and economically improving sufficient oxygen content of water with less energy consumption thus effectively increasing the growth and health of the fish.    DETAILED DESCRIPTION - The floating water aerator, which is solar- and/or wind-operator and enables year-round operation, for improving the oxygen content in the water, comprises a floating base (1) consisting of non-degradable material e.g. aluminum or plastic and water-resistant wood e.g. larch. A sub-structure in the floating base consists of non-degradable heat-insulating material e.g. Styrodur (RTM: Extruded polystyrene foam). The heat insulating material layer prominently contributes for floating-speed and assures free-holding of ice under the floating base in a required thickness, and is provided with respective recesses, which form a turbulence zone (2) combined an outflow channel (3). The outflow channel is closed with corresponding plastic washing net floating on the water level, so that the air flows in double function during the operation but a thermal protected storage space exists for the purpose of freely holding the ice at aerator standstill e.g. at night. The water aerator is equipped with a two-stage aerating turbine (4). The water line runs in the middle of the lower turbine rims to undergo water contact. The upper rim present in stationary water is reached over the water level, so that the lower turbine rim in the water exists for the purpose of easy start-up, where the lower turbine rim in the water increases the increased driving energy and the rotational speed, is pressed towards the top corresponding to more water, intensively swirls through from the upper rim, is mixed with ambient air and again downwardly moves as a foaming water. The axially acting lower turbine rim finally presses with the oxygen-enriched water by the outflow channel towards outside. The vertical position of the solar modules enables a better use of the surrounding reflection of water, snow and ice. According to the law of reflection, the initial angle corresponds to the entrance angle of the beam, so that a beam falling with only 15 degrees to the horizontal guides to the vertically standing solar module with an angle of 15 degrees to increase the energy output in the mornings, evenings and slightly overcast sky but also in the darker seasons at deeper standing sun more frequently occurring in weak light. The solar module curvedly or circularly placed on the floating base rotating towards the wind requires without complex tracking. During photovoltaic operation, the free-holding of ice receives an additional protection by thermal- or heating devices, where the over-current preventively achieves by using an electric circuit. A device standstill falls during heavy frost when the aerating turbine is blocked in spite of protective measures, where the Dc-motor sets under current during immediately re-entering sunshine. The two-stage aerating turbine rotates the swirling water in the upward and downward movement always in one direction. The swirling water acts gyrating mass and causes very efficient energy utilization. The used solar modules are mounted vertical to the floating base and forms a protected interior by a peripheral sequential mounting. During the use of the multiple solar modules, the parallely switched solar modules are equipped with blocking diode and for preventing the current reverse flow in the each created module. A thin-layer module or similar-module is used for the purpose of better use of low light, scattered light and oblique light. The floating water aerator is operated by a DC-motor as a result of performance adaptation of the solar module, where DC-motor directs without intermediate storage in batteries. The anchoring takes place only on one side of the floating base, which is necessary for an air-side during emerging wind. The anchor works against the wind force on only one side of the floating base to exclude an overbalance of lateral wind gusts. The anchor is equipped with a swivel by using chain and wire rope for preventing overrotation. The total length of the anchoring material is to be measured according to the highest water level to constantly adapt the floating base with increasing and/or changing water level. A lateral wind guide plates are introduced at the lee-side of the floating base to stabilizingly work in additional direction. A vertical rotor that works in respective wind direction during using power increasing additional equipments such as guide plates and screening plates without wind tracking requires by the level of the floating base in respective wind direction.    DESCRIPTION OF DRAWING(S) - The diagram shows a schematic representation of a floating base with functional parts (Drawing includes non-English language text).    Floating base (1)    Turbulence zone (2)    Outflow channel (3)    Aerating turbine (4)    Insulating layer. (5)