What's the plural form of land-locked salmon? Here's the word you're looking for.
Answer
The noun land-locked salmon can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be land-locked salmon.
However, in more specific contexts, the plural form can also be land-locked salmon e.g. in reference to various types of land-locked salmon
or a collection of land-locked salmon.