The commonest form of stress on fish is caused by their owners failure to follow the basic rules of fish keeping which are. ":- 1 inch of fish must have at least 1 gallon of water. :- Every tank must have a permanently running 'cycled' filter. :- Every tank must have at least 50% of its water replaced every week." Each species needs their own special water parameters and failure to provide water of the right temperature, pH and GH will also make the fish sick as will failure to feed the fish the correct diet.
It will increase their blood pressure, heart rate & respiration which can make them susceptible to parasites or other illnesses
No; protruding eyes in most fish is a sign of disease or stress.
There are a number of factors that can be held responsible when it comes to stress in an aquarium environment. Almost everything can put stress on a fish. Stress is a vicious circle in fish, same as it is in human beings. The more stress they experience, they less prone they are to being able to fight off disease, other fish, unfavorable water conditions and more. Stress is more a catalyst within other causes than a cause itself, but on the flip side of that it is always a major player in unhealthy fish.
Clamped fins are a sign of stress; check water quality and for signs of disease.
If by clear water you mean freshwater than the fish will have all sorts of problems. It will be more likely to get a disease, stress the fish out, weaken its immune system, and will kill the fish.
Sometimes, if they are lucky, yes. Usually, fish catch swim bladder disease if they swallow too much air however this is very rare and happens more often on some types of fish. Very often, the answer is no.
It won't do much damage unless you have absolutly no ventalation. It is definetly better to have vents for gasses to escape fromt the water.If there is no ventalation than your fish could be more prone to disease and stress.
Probably swim bladder disease. Dirty water, stress, over feeding (leading to constipation), and temp fluctuations will cause this.
there are about 3000 types of fish there are about 3000 types of fish
the most common causes for fish disease's is stress some other factors could be open wounds being infected, when doing a water change adding dirty water- all though tap water for humans is fine fish are not so tolerant to parasite's that live in tap water.
Could possibly be something more seriously wrong when fish lose scales. COuld be a parasite, fungus or some disease.
Yes.The most common fish disease is ick. This most likely happens in pet fish.