For full functionality of this site it is necessary to enable JavaScript. Here are the instructions how to enable JavaScript in your web browser.

Click here to view publicly accessible slides and webcasts from the FaceBase Phase 2 Final Recap webinar.

FishFace

8 dpf Development

[ Back to The ceratohyal: associated bones and articulations]
Info Image

Please hold mouse over images to see annotations.

8 dpf
zc81Tg
Alizarin red
Ventral
Lateral
Description

By 199 hpf, the ceratohyal (ch) has increased in size from that seen at 150 hpf. The overall morphology of the ceratohyal increasingly appears like a dumbbell from the lateral view. The ceratohyal continues to articulate with the interhyal (ih) along the dorso-posterior edge of the ceratohyal, with the basihyal (bh) dorsally and the contralateral ceratohyal medially at the anterior midline, and with branchiostegal rays 2 and 3 (bsr2, bsr3) along the postero-lateral aspect of the ceratohyal. More anterior to branchiostegal ray 2, branchiostegal ray 1 (bsr1) projects postero-ventrally from the medial aspect of the ceratohyal bone (chb) at the middle region of the ceratohyal. The ventral hypohyal (hhv) is obvious now in the perichondrium at the ventro-anterior tip of the ceratohyal.