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Catalert.png Please copy and paste ' [[Category:Invertebrates]] ' into the end of your article to include it in this category.

An invertebrate is any animal without a vertebral column (spine).

Typical examples found in the aquarium are Sponges, Jellyfish, Flatworms, Roundworms, Sea stars, Sea urchins, Sea cucumbers, Squid, Snails, Crabs and Shrimps (crustaceans), Crayfish and Lobsters.

Caridina Japonica5.jpg
Pomacea bridgesii1.jpg