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elopomorpha

/ˌɛləpəˈmɔrfə/

Superorder of fishes with leptocephalus larvae

From Greek elop- (Elops).

noun
elop-
Ancient Greek
ἔλωψ (élōps)
A name for a fish, probably referring to the tarpon or a similar fish
Scientific Latin
Elops
Genus name for the tarpons and related fishes
Modern zoological nomenclature
elop-
Combining form used in fish taxonomic names
-morpha
Ancient Greek
μορφή (morphḗ)
Form, shape, or appearance
Scientific Latin
-morpha
Taxonomic combining form meaning “having the form of”
Modern zoological nomenclature
-morpha
Used in names of major animal groups
Combined
Elopomorpha
Elop- (“Elops fish”) combines with -morpha (“form”) to mean a group shaped or characterized like Elops
Modern zoological Latin
Elopomorpha
Name of a fish superorder united by its distinctive leptocephalus larvae
Modern English
elopomorpha

The name begins with a fish name that sounds almost like a spell from a fantasy novel: Greek ἔλωψ, élōps, a term for a fish later preserved in the genus Elops. Then zoologists attached μορφή, morphḗ, “form,” the same little Greek engine found in morphology, metamorphosis, and amorphous. In 1758, Linnaeus’s tenth-edition classification helped turn this Greek-and-Latin naming machinery into the filing system biologists still use today. So Elopomorpha literally suggests “the Elops-shaped ones,” although the group is united less by looking like a tarpon than by possessing an extraordinary transparent, ribbonlike larva called a leptocephalus. The memorable trick is to picture an Elops fish carrying a Greek label-maker: one label names the fish, the other announces its form, and together they identify a whole superorder.

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