Fig. 12

SEM of the caudal region of N. japonicus scales, representing the other two species. The caudal region has fine segment with pores (P), ctenii (C), focus (F), posterior margin (PM), rostral field (RF), caudal field (CF), lateral field (LF).

SEM of the caudal region of N. japonicus scales, representing the other two species. The caudal region has fine segment with pores (P), ctenii (C), focus (F), posterior margin (PM), rostral field (RF), caudal field (CF), lateral field (LF).