The leptocephalus stage of the larvae begins after the nutrients from the yolk have been absorbed and the eyes and teeth are formed. At this point, the larvae usually have long forward-facing pointy teeth. As the larvae grow larger, the teeth will be replaced by shorter teeth and will increase in number. The maximum size larvae reach varies from about but can be as large as or more depending on the species. After the leptocephali have reached their maximum size, they enter their glass eel stage. Their laterally compressed bodies tend to become more rounded in this stage. The head also thickens, the olfactory organ enlarges, and their teeth are lost.
