The characteristic that fish and invertebrates share is that they both can lay eggs.
Invertebrates are a group of animals that do not possess a vertebral column also known as a backbone or spine, which results from the notochord.
Invertebrates include insects, crustaceans, arachnids, myriapods, mollusks etc.
Fishes, on the other hand are aquatic animals classified under the phylum vertebrata meaning that they possess a backbone.
However, one similarity between fishes and invertebrates is that they can both lay eggs (oviparous mode of reproduction).
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