Ammonia levels should be at zero. Ammonia is never safe to have in an aquarium especially new fish. Transporting a fish generally causes some stress for them and with the addition of a water problem in their new home it could prove fatal. If this is a brand new tank it would be wise to cycle it fully before adding a fish.
A fish actually excretes ammonia dissolved in water. At the temperature and pressure that fish are normally found ammonia is a gas.
There are several simple to use 'Test Kits' available at most pet shops.
Fish smells like ammonia when it starts to spoil.
NO, it should be zero. 7.6 for pH level is ok though. To lower the ammonia level, try feeding less and doing a water change no more than 50%. If it doesn't go down you can buy something to help at your local fish store
Yes, ammonia can not only affect the growth of fish, but if the ammonia level in a tank is too high, it will kill them.
It could be any number of aquarium diseases. take a sample of water and the next fish that dies to your local aquarium store and have them looked at.
Ammonia is harmful to fish. Its is a by product of the nitrogen cycle, which is what keeps the water stable in your tank(i wont delve into that) but yes ammonia can burn fish, especially those who lack scale's.
Is it ammonia
Cod fish or any type of fish will have ammonia like smell when it is no longer fresh. This smell will begin to appear as you are cooking it. It may also have a taste that is similar to ammonia, too.
It would die. The ammonia would kill the fish if amounts were elevated.
The fish is undergoing normal decomposition, which releases ammonia. The fish may be too "expired" at this point to eat. If in doubt, throw it out!
Ammonia can be built up in them separately or the two together. Some species of fish produce more waste and therefore more ammonia than others, for example the goldfish. Turtles are also very wast producing and turtle tanks are often high in ammonia. All fish produce ammonia. So yes.