NF stage 25

^ http://purl.obolibrary.org/obo/XAO_1000041

Nieuwkoop and Faber stage 25, corresponding to an embryo of age 1 day, 3 hr 30 min at 22-24 Celsius and having the following external morphological criteria: Eyes protruding equally far or further laterally than gill-area. Gill-area grooved. Invagination of otic vesicle indicated by pigment spot. Beginning of fin formation. Length: 2.8 - 3.0 mm. [ https://www.worldcat.org/search?q=bn%3A0815318960 ]