Astacus Astacus
Astacus astacus (commonly known as the European crayfish, noble crayfish, or broad-legged crayfish) is a freshwater decapod native to Europe from France to Russia to Scandinavia
zoology
Palaemon malcolmsonii
Introduction Macrobrachium Malcolmsonii (formerly known as Palaemon Malcolmsonii) or monsoon river shrimp is an economically important nocturnal omnivorous freshwater shrimp that inhabits the rivers, lakes, and ponds of India, Pakistan, and Bangladesh. They are 25 to 40 cm long, relatively hardy, and prefer slow, clear water. They are bottom-dwellers that breed during monsoon months. Classification of Palaemon malcomsonii Taxonomic Rank Name Characteristics Kingdom Animalia Multicellular eukaryotes Phylum Arthropoda Segmented invertebrates with jointed appendages Subphylum
SACCOGLOSSUS
Acorn worms in the genus Saccoglossus are members of the class Enteropneusta within the phylum Hemichordata. These worms feed on organic particles while burrowing through muddy or sandy soils in shallow sea environments. They are crucial to the recycling of nutrients and the turnover of sediment. Saccoglossus offers important information on early deuterostome evolution and