Danio rerio larval stage larval protruding mouth ZFS:0000035 Sirarat Sarntivijai https://www.zfin.org/zf_info/zfbook/stages/larv_stgs.html Larval: Protruding-mouth Protruding-mouth stage (72 h): Modified from: Kimmel et al., 1995. Developmental Dynamics 203:253-310. Copyright © 1995 Wiley-Liss, Inc. Reprinted only by permission of Wiley-Liss, a subsidiary of John Wiley & Sons, Inc. EL = 3.5 mm, HTA = 25 degrees. The mouth is wide open and it protrudes anteriorly just beyond the eye. The blade of the pectoral fin continues to expand, now extending posteriorly over most of the length of the diminishing yolk ball larval protruding-mouth stage