Eastern swamp crayfish

The eastern swamp crayfish (Gramastacus lacus) is a species of small freshwater crayfish from coastal New South Wales, Australia. It is distinguished from related species by large genital papilla on the males, large raised postorbital ridges, a laterally compressed carapace, and elongated chelae.

Eastern swamp crayfish

The eastern swamp crayfish (Gramastacus lacus) is a species of small freshwater crayfish from coastal New South Wales, Australia. It is distinguished from related species by large genital papilla on the males, large raised postorbital ridges, a laterally compressed carapace, and elongated chelae.