Micropyle (a) and spiralling ridges (b) of the egg envelope in Notopterus notopterus at higher magnification; ev-egg envelope, m -micropyle. Scale bar = 1 mm.

 
 
  Part of: Yanwirsal H, Bartsch P, Kirschbaum F (2017) Reproduction and development of the asian bronze featherback Notopterus notopterus (Pallas, 1769) (Osteoglossiformes, Notopteridae) in captivity. Zoosystematics and Evolution 93(2): 299-324. https://doi.org/10.3897/zse.93.13341