What is a significant feature of endothall?

A significant feature of endothall is that fish sensitivity varies with the formulation type. Different formulations of endothall can have different impacts on aquatic organisms, including fish. For instance, some formulations may be more toxic to certain fish species, while others may have minimal effects. This variability is crucial for applicators to consider when selecting an appropriate formulation for specific aquatic environments, ensuring that the application of endothall minimizes harm to non-target organisms while effectively controlling target pests like algae.

The other options suggest characteristics that either do not apply or only partially describe endothall. Claiming it is only available in a liquid formulation disregards the existence of other formulations. The assertion that it is effective in any water temperature overlooks observed limitations in performance under varying environmental conditions. Stating that it only controls algae neglects the fact that endothall is also effective against certain types of aquatic weeds, making it broader in application than just algae control.