FIGURE 5.

Red musculature in ethanol‐preserved specimens. Skinned specimens showing superficial red musculature that covers white musculature. Muscle packages are narrow in anterior body region and gradually become larger thus covering entire white musculature in caudal region. Pair of muscle bundles dorsal and ventral the horizontal midline lie medial to superficial red musculature (RM). (a) Borostomias elucens (USNM uncat., ca. 110 mm SL). (b) Stomias affinis (USNM 358765, 114 mm SL). (c) Idiacanthus atlanticus (USNM 206705, 327 mm SL). (d) Eustomias schmidti (USNM 261301, 185 mm SL). (e) Malacosteus niger (SIO 73‐25, 135 mm TL). (f) Argyropelecus olfersii (MNHN 2021‐0223, 62 mm SL) superficial red musculature covers entire white musculature in all body parts