Why Are All My Fish At The Top Of The Tank
Olivia Luz
The reason why my fish were swimming at the top of the tank.
The chances of hypoxia occurring in an aquarium increase when fish are overcrowded or do not have an adequate filtration system. The commonest reason for any fish to be at the surface of a tank is the water is putrid and lacking in oxygen. I feed them algae wafers lettuce and zucchini. I would guess that you are not keeping to the basic rules of fishkeeping which are.
My tank was new and the nitrogen cycle wasn t strong enough to handle all of the fish and two crayfish who put out lots of waste by pooping and peeing. It is said that when guppies stay swimming at the top of the tank it is because they could be suffocating and struggling with the lack of oxygen in the water. Water ph and water hardness can also affect them if there is a sudden large swing. Your plastic plants have bubbles on them which suggests you recently did a water change.
Your water is saturated with oxygen a common thing in winter. I clean the tank weekly do water changes clean the cartridge add a drop of liquid calcium and the last few days i have noticed the majority are all at the top of the tank at the water line. Guppies swimming at the top of the tank. Pet shops don t always tell you about the nitrogen cycle but it s one of the most important parts of successful aquarium keeping.
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The tank is heated and filtered and been running almost a year. Fish died in shock because there is a sudden large change in water temperature ph hardness etc. I have a 5 gallon tank with about 300 red ramshorn snails. Since fishes have no body heat they are sensitive to sudden changes in water temperature.
However if you notice that multiple fish are trying to breathe at the surface of your aquarium or staying at the top of the tank then it s likely that something is wrong with the conditions of your habitat. Cold water holds a lot of dissolved oxygen. When the fish owner put them in the fish tank. I had a toxic aquarium.
It can cause fish acute discomfort for a couple of hours especially if the bubbles get into their gills.
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