(A) Distal surface of the sagittal otoliths from Ichthyococcus ovatus. (B) Enhanced image of the right otolith used to count presumptive annuli for age estimation. Black dots represent the growth rings; the distance between a and b is the otolith width while the distance between c and d is the otolith length; (C), proximal surface of the left otolith showing rostrum (R), antirostrum (A), excisura ostii (E), sulcus acusticus (SA, continuous line), colliculum ostii (CO, dotted line), colliculum caudii (CC, dashed line).

 
 
  Part of: Sardo G, Geraci ML, Falsone F, Gancitano S, Gancitano V, Scannella D, Okpala COR, Titone A, Vitale S (2022) First record and otolith morphometric description of an adult lightfish, Ichthyococcus ovatus (Actinopterygii: Stomiiformes: Phosichthyidae), caught in the Strait of Sicily (central Mediterranean Sea). Acta Ichthyologica et Piscatoria 52(2): 159-166. https://doi.org/10.3897/aiep.52.84928