From an inshore fisheries management perspective, the antonym of shellfish would be wetfish. However, this is in the context of how we describe everything that is "not shellfish", and isn't strictly an "opposite of shellfish", if one assumes that such a thing can really exist.
To try and define a more appropriate "true" antonym, I suppose you'd need a taxonomist who was prepared for a challenge!
The plural of shellfish is shellfish.
ShellFish
shellfish
They are mollusks and not shellfish.
A Shellfish is can be a carnivore, herbivore, and omnivore depending on what kind of shellfish it is
Shellfish are invertebrates.. Fish are vertebrates. Essentially, clams, oysters and similar animals are shellfish.
An edible shellfish is a cockrull.
A Shellfish is can be a carnivore, herbivore, and omnivore depending on what kind of shellfish it is
Yes, an octopus is a shellfish. It is also a mollusk which is a shellfish.
No, shellfish do not have backbones because they have exoskeletons.
Yes, clams are shellfish, they have a shell.
The crab krall to the shellfish