Formation and ossification of caudal complex in larval crimson snapper. A, Larvae on 13 DPH show two cartilaginous hypurals (HY) and Notochord (NC); B, Larvae on 16 DPH show developing caudal fin rays (CR), three epurals (EP), five hypurals, 1st hypural to 5th hypural (HY1 to HY5); C, Larvae on 18 DPH show five cartilaginous hypurals, three cartilaginous epurals, neural arch (NA), modified neural spines (Mns) and modified haemal spines; D, Larvae on 25 DPH show cartilaginous urostyle (Ur) and preural vertebra (PV); E, Larvae on 29 DPH show ossification of urostyle; F, Larvae on 30 DPH show ossification of fin rays and fin rays end bifucated (Bi); G, Larvae on 34 DPH show ossification of hypurals, modified neural spines and modified neural spines; H, Larvae on 36 DPH show ossification of caudal complex.