* Live fish: Live fish can carry diseases that can infect guppies.
* Raw meat: Raw meat can also carry diseases that can infect guppies.
* Insects: Insects can be difficult for guppies to digest and can cause intestinal problems.
* Chocolate: Chocolate contains a compound called theobromine, which is toxic to guppies.
* Salt: Salt can damage guppies' gills and kidneys.
* Oil: Oil can coat guppies' gills and make it difficult for them to breathe.
* Alcohol: Alcohol can damage guppies' liver and kidneys.
If you are not sure whether or not a particular food is safe for guppies, it is best to err on the side of caution and not feed it to them.