To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 2 Exemplifying videos #1-4 of RBC splitting in the zebrafish embryo. RBCs are tangling up and splitting at a vascular pole. Time interval is indicated as min:sec. The videos were all captured between 39-45 hpf. Splitting of circulating red blood cells as an in vivo mechanism of erythrocyte maturation in developing zebrafish, chick and mouse embryos Daniel Brönnimann, Tiziana Annese, Thomas A. Gorr, and Valentin Djonov Journal of Experimental Biology 2018. 221:None-None; doi: 10.1242/jeb.184564 Download Original Video