Collected over mud and sand bottoms. Its small size and deep-dwelling habitat makes collection a difficult task .
Dorsal spines (total): 6; Dorsal soft rays (total): 46 - 51; Anal soft rays: 40 - 44; Vertebrae: 28 - 31. This species is distinguished by having spinous pterygiophore formula 3-123, 3-132, or 3-122 + 2. (here the 6th spine shares its interneural space with the 2 pterygiophores associated with the first 2 dorsal fin soft rays) (vs. 3-1221 or 3-12210 in other amblyopines); precaudal vertebrae 9 (vs. 10 ) . : fusiform / normal; Cross section: compressed.
Behavioural data for Karsten Totoyensis is currently being reviewed.
Marine; demersal; depth range 0 - 1122 m , usually 0 - 55 m . Tropical; 12°N - 19°S, 117°E - 178°W
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