I can safely say no. I have tried this before. I went three months without cleaning or a filter, but the fish survived. And it was a baby! Then again, the fish was wild caught. (It is NOT endangered! It is your conventional minnow.)
*reef fish live in it and so do sea anemones and lots of other sea creatures, so it is a good place for sea creatures, it doesn't harm them.
YES!!!!! The oils on your skin will get into the water, and the fish will "breath" it in and it's kind of toxic!
If you don't wash it properly, yes it can.
River pollution kills the single celled organisms that many of the creatures in the water need to live off of. While the garbage in the water breaks down it releases poisons (especially in plastic) that can potentially harm animals that eat fish or other organisms that live within the river. This is why when rivers become overly polluted, you see less and less of animals around it. Bacteria -> Small creatures -> Fish -> Bears, wolves, anything that is interested in meat.
Vinegar can harm carrots when it is poured on carrots as they grow. Carrots require a large amount of water in order to grow to a decent size and adding vinegar can slow or stop their growth.
water is best for plants. Soda has chemicals that will harm or kill the plant
You may have to smash the ornament somehow., but be carefull not to harm the fish. Ornaments do not belong in a fish type environment. Try water plants.
White suds are usually the sign of a chemical reaction or pollution in the water. So, yes it is possible that it is harmful to the fish.
Vinegar is acidic. If too much vinegar is added to water, the pH of the water will decrease and the fish will die.
They damage fish as most toxins in the water can harm the fish. Some toxins have a mild effect on fish but some can be fatal. Water pollution can also suffocate the fish if algea forms on the lake/ river because the fish lose oxygen. These are some of the points just look it up on the web.
Yes any amounts of sugar added to a fish bull can cause great harm or even death to pet fish used to fresh water and their natural fishbowl habitat
it help the fish to move swiftly threw the water