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Akko Birdsong and Robins ZBK
Diagnosis: Body elongate; vertebrae 11 + 16-17 = 27-28; first dorsal fin with seven spines; dorsal-pterygiophore formula 3-221110; second dorsal and anal fins with equal numbers of elements, 15 or 16 present in each; dorsal, caudal, and anal fins continuous, connected by a membrane; upper and lower jaws with enlarged widely spaced teeth which overlap the lips of both jaws; head with very small eyes (2-8% of head length); mouth large, the opening at an angle of 50° to the horizontal; a cephalic lateral-line canal with two pores (B’,G’). Pores very reduced in size and occasionally absent. Sensory papillae pattern in a transverse pattern; horizontal row b elongate, extending to vertical through middle of eye; dorsal rows n elongate, approaching or meeting at midline; rows x1 and x2 continuous.