![]() Otolith morphology can be used as an additional diagnostic character for the identification of Carassius species and possible hybrid individuals.Ībramenko, M.I., Ecological and genetic mechanisms of the dynamics of population abyndance in silver crucian carp (C arassius auratus gibelio (Bloch, 1782)) from the Tsimlyansk Reservoir, Inland Water Biol., 2012, vol. carassius 37–86 mm FL) is observed based on Fourier and wavelet analyses of asteriscus and lapillus shapes. A distinct separation between three groups (mainly immature C. The two species are significantly different by six shape indices of the asteriscus and lapillus. Bilateral directional asymmetry is registered for some otolith measurements. A comparison of otolith structure shows that the lapillus is more rounded in the latter species, and the asteriscus length (in anteroposterior direction) is larger than its width (in dorsoventral direction) in gibel carp vs. The otolith shape analysis was conducted to assess the interspecific differences. The morphology of asteriscus, lapillus, and (partly) sagitta is described in gibel and crucian carps from a small natural pond located in Nizhny Novgorod oblast, Russia.
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