Their fur is used both in its natural state and for imitating the fur of more valuable species.

Not likely: the most valuable species could always be cultivated on fish farms.

Yet even for such commercially valuable species, the most basic information is often lacking.

However, the more popular and valuable species are usually sold separately.

It is a valuable commercial species, acquired through aquaculture and trawling.

This makes the grass a valuable species for landscape rehabilitation in native beach habitat.

Ali said that since last year he had caught only three beluga sturgeon, the most valuable species.

Ocean owners profit most by making sure that the valuable species in their region are not hunted to extinction.

It has in any event a huge impact on those keeping track of the quotas and is important for the valuable species.

Apart from the avifauna, the park has valuable floral species of both native and foreign origin.