Yes, crayfish are freshwater crustaceans. They resemble small lobsters, which they are closely related to. They are mostly found in brooks or streams with running water and with shelter from predators.
No, insects are not crustaceans. They are in completely different subphylums. Crustaceans are in subphylum Crustacea, and insects are in subphylum Uniramia.
Wings are only found in insects. There are no crustaceans that have wings. Crustaceans are design to live in water, not fly.
Insects are arthropods.
No, crabs are crustaceans. Crustaceans and insects are both classes of the Phylum Arthropoda. They are related, but not insects.
Oops! -No, they are not- they are terrestrial crustaceans.
nope
arachnids, insects, crustaceans, etc.
Yes, crustaceans do have an exoskeleton, as do all arthropods, including arachnids, insects, and crustaceansm
Crabs and lobsters are arthropods. In colloquial speech the term "bug" generally refers to arthropods on land, mostly insects and arachnids. In scientific terms the only true bugs are insects in the order hemiptera, excluding crustaceans, which are not insects.
Barnacles are crustaceans( a type of arthropods)
Nope... they're insects.
Insects don't do well in salt water, so none. There might be crustaceans, however, in the form of aquatic isopods (pillbugs). Also barnacles - these are crustaceans!
Insects, crustaceans and myriapods (centi/millipedes).