Ideally, never. Fish, especially large fish like tuna, are known to contain heavy metals which can damage your heart and brain. Commercial fishing may leave us with fishless oceans by 2040. And it's horrible for the fish, who die agonizing deaths from suffocation or blunt force injury.
Some types of fish can eat other bigger fish. For examples, piranhas often eat bigger animals including fish.
no you should eat turnips
There is no required amount of fish that humans should eat in a day. Many humans go days without fish, and some people never eat fish.
You should feed your betta fish flakes once or twice a day, giving them only as much as they can eat in about 2-3 minutes. Overfeeding can lead to health issues for your fish.
you should eat as much as u like
Yes, diving beetles often eat small fish. It is surprising to note that these beetles often attack and eat fish and other bugs that are much larger than themselves.
They often eat stingrays, small fish and crustaceans.
You should eat two portions of fish a week. One of the portions should be oily fish such as sardines or mackerel.
Your fish should only have a pinch of its food everyday.
Any fish that can fit one in their mouth will probably eat them. All predatory fish (which is most fish) will try to eat them. Even a goldfish would pick at one.
You should feed your fish as much as it can eat in 2-3 minutes twice a day.
.meat, .fish, .sometimes turtles