Juvenile European anchovy (Engraulis encrasicolus) has a complex incremental growth pattern that was studied using scanning electron microscope (SEM) and optical microscope observations. Daily increments were identified and related to rhythmic growth pattern while double-band structures were identified as one increment. The causes of these growth patterns are discussed.
Cermeño, P., Morales-Nin, B., & Uriarte, A. (2008). Juvenile European anchovy otolith microstructure. Scientia Marina, 70(3), 553–557. https://doi.org/10.3989/scimar.2006.70n3553