They are generally regarded as trash fish by sportsmen in the United States, because they eat more desirable species, including crayfish.

It has been described as the most well known and desirable species of the genus.

After this, seedling of desirable species can become established.

Trees must be of merchantable size, a desirable species, and in an area accessible to harvesting equipment.

Pike's further reputation as a pest seems to lie predominately amongst anglers who seek more desirable species.

However, habitat modification, while limiting nuisance wildlife, may also limit desirable species such as songbirds as well.

Both of these ferns are beautiful as individuals, but they spread all too rapidly and can smother wildflowers, perennials and other desirable species.

We must shape a desirable species and then protect it, rather than finding ourselves forced to select among two or more undesirabilities.

In the early days of government stocking operations all types of attempts were made to introduce desirable species for the angler.

Experience has shown that selective fishing always weakens the biological strength of desirable species in the ecosystem.