Epusillus               Etmopterus pusillus data
Espinax                 Etmopterus spinax data
get_growth_post_prob    Posterior probability of sex being female based
                        on growth
sim_vb_data             Simulate sex-specific von Bertalanffy data with
                        missing classifications.
vb_bind_gr              Gradient of the negative log-likelihood for
                        potentially constrained von Bertalanffy growth
                        model (typically used internally).
vb_bind_nll             Negative log-likelihood for potentially
                        constrained von Bertalanffy growth model
                        (typically used internally).
vb_growth_mix           Fit finite mixture von Bertalanffy growth
                        model.
vb_lengths              von Bertalanffy growth function.
