Typically if your fish is surfacing, it's typically a water quality problem. You should test your water for ammonia, nitrites, and nitrates which should be 0, 0, and less than 10 respectively. In addition also check your PH to ensure that it has not crashed too low as this can also cause fish to surface quite often.
To keep your water at it's best, you should perform weekly water changes of at least 50%, and make sure that the water that you are adding back to the tank is the same temperature as the water you removed.
Bowls are not suitable for keeping goldfish (or any kind of fish) in. Its shape will disorientate the fish so its automatic systems for balance and position in the water will not be working properly. Also there is a basic rule for keeping fish that many pet shops totally ignore in their attempts to make money off people who want to keep a fish but have little spare cash. That rule is "1 inch of fish needs 1 gallon of water". Goldfish can grow to 24 inches plus so they are not suited to be kept in tiny containers. My advice is to either get a reasonable sized tank and filter for the fish or return the fish to whoever you purchased it from and then smash the bowl or use it as a vase.
Well if your fish is a goldfish, it probably has swim bladder disease. The fish's swim bladder helps it to stay balanced as it swims. If your fish is not able to swim, there could be internal damage from another fish, or, it could have swim bladder. Maybe try calling your local pet store to see what they can do for you. :)
Well.... you could feed it (maybe its hungry?)
the fish tank
fish tank
its the scuba tank on the swimming guys back.
As long as the tank water is clean, and the fish are being fed properly, the catfish may just be entertaining itself by swimming that way.
A fish tank would hold about 6 liters.
Give it a deep tissue massage. It may just be tired from swimming all the time.
I hope your tank is large enough for the 7 or 8 inches of fish you have in there. (1 inch of fish needs 1 gallon of water). Shortage of oxygen will cause fish to go to the top/surface for air. However Guppies (Poecilia reticulata) are naturally surface feeding fish so that is where I would expect them to spend most of there time. Surface feeders are easy to recognise simply by looking at the construction and shape of the fishes mouth. Note that it tends to open in such a way as to skim the surface of the water.
Some fish prefer swimming at the top of the tank while others the bottom or middle.
if your fish is going around the tank with its eyes cosed multiple times.
centimeters are a small unit of measurement. Pools are very large. You would use it on a fish tank.
Cause its dead
That depends on the weight of the fish as compared to the weight of the water their bodies displace. If it's a heavy, dense fish, then the tank with the fish would weigh more. If it's a light, less dense fish, then the tank with water only would weigh more. This assumes that the water displaced has been removed from the tank, right? If you are adding the fish to the water then I think it should increase the weight regardless of the density of your fish. The question then might be, does the fish weigh less when it is swimming than it would on a dry scale?