In waters off Hawaii, Young (1978) found the distribution pattern shown on the right. Small octopods (ca. 5-15 mm ML) were found near 150-200 m depth or mostly below 600 m. One gravid female was captured at 1400 m. Two nearly mature males were taken at 1200 and 1425 m. Four brooding females were taken between 800 and 900 m.
Figure. Vertical distribution of B. pygmaea off Hawaii. Bars - Fishing range of opening/closing trawl; absence of bar indicates capture is from an open trawl. Circles- Modal depth of the trawl. Open yellow circles- Day captures. Filled blue circles- Night captures. Red dots with yellow cross-bars- Brooding females, day captures. Red dots with blue cross-bars- Brooding females, night capture. Red dot with green ring- Gravid female. Chart redrawn from Young, 1978.
This is a tropical-subtropical species found worldwide (Thore, 1949; Nesis, 1982).
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