Gas embolism in fish manifests itself in the form of small bubbles of gas on the body or eyes. As a rule, they do not pose a serious health hazard. However, in some…

Popeye or popeye is swelling of one or both eyes in aquarium fish. The disease is difficult to treat, but easy to prevent. Symptoms Puffy eyes are difficult to confuse with another disease.…

In the anatomical structure of fish, there is such an important organ as the swim bladder – special white sacs filled with gas. With the help of this organ, the fish can control…

Chlorine and its compounds enter the aquarium from tap water, where it is used for disinfection. This happens only when the water does not undergo pre-treatment, but is poured into the fish directly…

Fish can suffer from sudden changes in temperature, as well as from too cold or warm water. The most obvious symptoms are noticeable in case of hypothermia. The fish become lethargic, “sleepy”, lose…

Nitrogenous compounds include ammonia, nitrites and nitrates, which occur naturally in a biologically mature aquarium and during its “maturation”. Poisoning occurs when the concentration of one of the compounds reaches dangerously high values.…

Water of inappropriate hardness can be fatal to fish. Especially dangerous is the content in hard water of those species of fish that naturally live in soft water. First of all, the kidneys…

Fish can be physically injured (open wounds, scratches, torn fins, etc.) from being attacked by neighbors or from sharp edges in aquarium decorations. In the latter case, you should carefully inspect all items…

Fish can suffer from a lack of oxygen in the water, and if left uncorrected, they will eventually become weak and vulnerable to viruses, bacteria, fungi, and parasites. They will not be able…

Iridoviruses (Iridovirus) belong to the extensive family of Iridoviruses. Found in both freshwater and marine fish species. Among ornamental aquarium species, iridovirus is ubiquitous. However, the most severe consequences are caused primarily in…