Rotifers (Rotifera) are invertebrates found mainly in freshwater but can occur also in virtually any aquatic environment.
A paper by Hegers (2008) "Global diversity of rotifers (Rotifera) in freshwater" might be helpful to you.
invertebrates
vertebrates and invertebrates different?
They are vertebrates.
Vertebrates have spinal chord and invertebrates don't.
Vertebrates have spines & invertebrates do not have spines.
Vertebrates.
Invertebrates.
invertebrates
The chordata contains both vertebrates and invertebrates.
all vertebrates have endoskeleton but not all invertebrates do
The major difference between vertebrates and invertebrates is that vertebrates have a back bone and invertebrates don't
Snakes are vertebrates.