| Snout length, % HL | 46–51 | 40–44 | 38–42 |
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| | [including data of Shcherbachev et al. (1986)] | |
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| Dorsal contour of snout in lateral view | Horizontal (Fig. 3A) | Convex at level of nasal fossa, gently declining toward the tip (Fig. 14A) | Horizontal (Fig. 16A) |
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| Sides of snout in dorsal view | Convex in basal half, straight to Strongly and regularly conweakly concave in front of vex (Fig. 14B) nasal fossa (Figs. 3B–C) | Weakly convex in front of nasal fossa (Fig. 17A) |
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| Tip of snout in dorsal view | Acuminate | Rounded | Apparently acuminate (distal half of terminal scute broken in both known specimens) |
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| Terminal scute of snout (medial element) | Elongate, diamond-shaped, 9.9–11.1 % HL (Figs. 3B–C) | Short, rectangular, 3.3 % HL (Fig. 15A) | Diamond-shaped (Fig. 17A) |
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| Underside of snout (preoral region) | From almost completely scaled to largely scaleless in anterior third to two-thirds of preoral length | Scaleless except small area behind terminal scute and lateral quarters of posterior third of preoral length | Almost completely scaled |
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| Spinules on scales over interorbital region | Arranged in keel-like rows (Fig. 6A) | Mostly irregularly disposed (Fig. 6C) | Mostly irregularly disposed (Fig. 6E) |
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| Buttresses of spinules on trunk scales in front and below first dorsal fin | Forming transverse ridges (Figs. 5A–B, 6B) | Forming transverse ridges (Figs. 5G–H, 6D) | Not forming transverse ridges (Figs. 5J–K, 6F) |
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| Buttresses of spinules on scales from tail | Not forming transverse ridges (Fig. 7B) | Forming transverse ridges (Fig. 7D) | Not forming transverse ridges (Fig. 7F) |
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| Anus–anal length | 1.2–1.9 | 1.7 | 2.8–4.5 |
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