the relationship between organisms of two different species in which one derives food or other benefits from the association while the other remains unharmed and unaffected
There is competition, mutualism, commmensalism, parasitism, and predation. There is competition, mutualism, commmensalism, parasitism, and predation.
The Clown or Anemone fish lives in a "Symbiotic" relationship with its host Anemone in that they both depend on the other for food and/or protection. It is not a type of "commmensalism" where only one actually benefits from the relationship. In this relationship they both benefit from each other so this relationship is properly termed or defined as Symbiosis.
Mutualism - relationship between two organisms where both organisms benefit. Some symbiotic relationships are 'obligate', meaning that both symbionts entirely depend on each other for survival. e.g. Clownfish and Sea Anemones.Commensalism - relationship between two organisms where one organism benefits but the other is unaffected (neither benefits nor is harmed). e.g. Barnacles and Whales.Parasitism - relationship between two organisms where one organism benefits but the other is harmed by it. e.g. Ticks and Humans.Amensalism - relationship between two organisms where one organism is killed by it and the other is unaffected (neither benefits nor is harmed). e.g. Allelopathy - where a plant secretes a substance which kills other plants around it, stopping competition.
Lynn Margulis classified all the symbiotic relationships. Like parasitism, commmensalism, mutualism etc..
There are three most common symbiotic relationships. They are Commensalism, Mutualism, and Parasitism. Commensalism: Good for one organism, but the other is unaffected. Mutualism: Good for both organisms. Parasitism: Good for one organism, but bad for the other. One thing you have to remember about Symbiotic relationships is that no one ever dies. Even when you are a parasite you don't want your host to die, because if it did, the parasite would also die. There are also two more types of relationships. They are less common though. They are both considered Competition, but they are split into two different groups, Intraspecific and Interspecific.