Figure 2
From: Intergeneric hybrids inform reproductive isolating barriers in the Antarctic icefish radiation
Parents and gametes. (A) The female C. aceratus that provided the eggs. (B) C. aceratus unfertilized eggs. (C) The male C. rastrospinosus that provided sperm. (D) Sperm of C. rastrospinosus observed under the microscope. Scale bars represent 10 cm in (A,C), 1 cm in (B), and 100 µm in (D).
