The term used to describe all organisms which are not producers is consumers.

Here's why:

* Producers: These are organisms like plants and algae that make their own food through photosynthesis. They are the base of the food chain.

* Consumers: These are organisms that rely on consuming other organisms for energy. They can be herbivores (eating plants), carnivores (eating animals), or omnivores (eating both plants and animals).

Therefore, all organisms that are not producers are considered consumers.