2
1000
Crustaceans are a completely different species of Arthropod, because they have 10 legs, pupils in their eyes, etc. Most types of crustaceans also live in the water, although a few species of insects also live underwater.
Fish Crustaceans Mammals
Yes, crustaceans are considered to be animals. Crustaceans are a group of animals called arthropods and include shrimp, crabs, and lobster. There are more than 67,000 species of crustaceans in the world today.
Crabs, lobsters, shrimps, isopods, amphipod, banicle. There is more
arthropoda, containing animals such as insects, arachnids and crustaceans.
Arthopada is the phylum, crustacean is the class, and from there, there are many families, genus', and species'
500,at least that's what I've heard on a site.
The category with the most species is the phylum. For example, there are over 1 million species in the phylum Arthropoda, which includes insects, spiders, and crustaceans.
In species numbers, Arthropoda (insects, arachnids, crustaceans, centi/millipedes). 4 out of 5 species on the planet are arthropods. :D
A seahorse is a fish. There are 54 species of these small marine fishes in the genus Hippocampus.
A recently discovered species of eyeless crustaceans was discovered off the Canary islands. The crustacean known as Speleonectes atlantida has venomous fangs and is the only known venomous crustacean.