Why Do Goldfish Always Float on the Water Surface? 5 Common Causes and Solutions

Today let’s talk about, in the process of raising goldfish, if your goldfish are floating on the water, drifting lazily on the water, what causes it, and what the solutions are.

The swimming state of goldfish under normal circumstances

Um, when raising fish, normal fish swim in the middle and at the bottom. So generally, they will not swim on the water surface. Except when the fish are very lively and begging for food.

Common causes leading to goldfish floating

Body surface and parasite issues

So if you find your fish floating on the water surface, then the first thing you need to pay attention to is whether it has developed "White Spot Disease" (a common parasitic disease in goldfish) on its body. Because if the fish has white spots on its body, the fish will float on the water surface.

Second, touch the fish to see if it is sticky. If the fish has this sticky situation, then there is a high probability it is a water quality issue or there are parasites.

Then if your fish gills have this rotting or damaged condition, go kill the parasites. After killing the parasites, its gill function returns to normal, then this fish will recover.

Hypoxia issues

Third is whether the fish tank container lacks oxygen. For example, in summer when temperatures are high, the water’s "dissolved oxygen" (the concentration of oxygen dissolvable in the water body) will decrease. So if you feed heavily, and your air pump is turned on very low, then at this time, the total amount of dissolved oxygen you pump in is less than the amount of oxygen consumed. Then at this time the fish will also, especially in the afternoon, float on the water surface.

At this time you need to reduce the density, or reduce the water temperature.

Water quality issues

Also, if it is none of these three, and your fish always floats on the water surface, then you need to consider water quality. Because if the "Ammonia Nitrogen" (ammonia nitrogen compounds in the water, fish metabolic waste) is high, then this fish will also show the phenomenon of floating. So in this situation, rely on water changes, and also adding salt, to bring the ammonia nitrogen down.

Body shape and physiological issues

Then there is another type where it floats belly up, floating on the water surface. Then this is highly probable to be "Swim Bladder Disorder" (fish swim bladder imbalance, leading to abnormal buoyancy), which is a body shape issue. For example, some fish keepers buy fish, and they like the kind where the tail is especially big, but the left and right spread angle is especially wide, then the caudal peduncle is very short, the head is big, and the body is round again.

Then this kind of fish, many times after growing up, will flip over, ah, just sometimes drifting on the water surface. There is no good solution for this.

Dietary reasons

There is also a type where you are feeding inappropriately, feeding relatively little. Then it eats air, ah, sometimes there is a section of air inside the stomach, and in such a situation it will also float. Then you change the feeding position and technique, and many times it can be solved.

These are the causes for goldfish appearing floating on the water surface mentioned above. So if we encounter this, we can rule them out one by one, hoping to help everyone.