immediately_preceded_by developmental stage Medaka stage 32 Medaka stage 33 OlatDv:0000360 Zoological Science 11: 825-839 (1994) - 4 days 10 hrs Stage 33 (4 days 10 hrs) Stage at which notochord vacuolization is completed: The tail tip has not yet reached within inter ocular distance of the eye. Because the eyeball (choroidea) is very dark, the lenses can be seen only with strong trans illumination. The notochord is completely vacuolized to the end of the tail. The pineal gland is distinct at the dorsal surface of the vascularized forebrain. The tips of the membranous margins of the pectoral fins reach the 4th somite. - 4 days 10 hrs medaka_ontology stage at which notochord vacuolization is completed