Abstract:Morphological parameters and otolith growth of Collichthys lucidus were investigated by counting and measuring the daily rings in the left sagitta. Linear, logarithmic, polynomial, functional and exponential growth equations were used to describe the growth of otolith by morphological parameters of sagitta and to determinate daily age by the daily ring of sagittae. The long diameter of otolith in C.lucidus grew longer as fish body length increase within the range of 29.8-104.0 mm, but the ratio of short diameter /long diameter and short radius/long radius was rather stable. A significant power functional relationship was found out between long, width and weight of sagitta and between long radius and short radius. The relationships between length, width, thickness and weight of sagitta with fish body length and weight showed a significant power relationship except for the parameter of fish body length and thickness of sagitta which was represented by quadratic polynomial function equation.