DANIO // Anatomical Atlas & Osteology — 36 Vertebrae & Cranial Window

Weberian Apparatus (V1–V4) (4)

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V1 — Claustrum & Scaphium Acoustic Coupling

V2 — Intercalarium Ossicle Weberian Link

V3 — Tripus Resonator Sound Transduction

V4 — Drumming Muscle Attachment 140.2 dB Sonic Hub

Precaudal Vertebrae (V5–V14) (10)

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V5–V8 — Anterior Rib Bearers Visceral Cavity

V9–V14 — Mid-Trunk Neural Arches Axial Motor

Caudal Vertebrae (V15–V36) (22)

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V15–V25 — Haemal Spine Segment Carangiform Thrust

V26–V35 — Caudal Peduncle Fin Stride Link

V36 — Hypural Complex / Urostyle Caudal Fin Root

Danionella cerebrum — Osteological Reconstruction

36 Articulated Vertebrae · Modified 5th Rib Drumming Cartilage · Weberian Apparatus

Natural Cranial Window

Unlike Danio rerio (zebrafish), adult Danionella cerebrum maintains lifelong transparency over the dorsal cranial vault, lacking ossified skull roofing bones above the tectum and telencephalon.

              • Optical access depth: >1,200 µm

              • In-vivo 2-photon imaging without craniotomy

              • Adult length: ~11.5–12.0 mm

140.2 dB Drumming Apparatus

Peak SPL

140.2 dB

At 12 mm distance

Drumming Rib

5th Rib

Specialized cartilage

Motor Nucleus

Rh_Sonic

Hindbrain pacemaker

Muscle Speed

Fast-twitch

Superfast bilateral

Mechanism: A specialized drumming muscle pulls the 5th rib cartilage against the swim bladder, generating explosive acoustic snaps for territorial communication.

Biological Tissue Modeling

Morphological parameters and spine kinematics are aligned with live organoid bio-computing nodes hosted on the FinalSpark Neuroplatform Cloud.

FINALSPARK NEUROPLATFORM ↗