2732 Diaphus theta Eigenmann & Eigenmann, 1890 Myctophidae Lanternfishes Diaphinae Myctophiformes Teleostei California headlightfish Eastern Pacific: common in California Current region to 20°S (Ref. 31442), including Hawaii (Ref. 4925). Northwest Pacific: throughout subarctic-transitional waters to northern Japan (Ref. 31442). UBC 600170 51 N 130 W Diaphus theta FB 2738655 Myctophum protoculus 1068.719970703125 m ISH 509-1975 1975 Diaphus theta 80 - 250 m ISH 510-1975 1975 Diaphus theta 280 - 300 m ISH 511-1975 1975 Diaphus theta 280 - 300 m ISH 512-1975 1975 Diaphus theta 310 - 330 m ISH 514-1975 1975 Diaphus theta 100 - 120 m ISH 515-1975 1975 Diaphus theta 310 - 335 m ISH 516-1975 1975 Diaphus theta 60 - 80 m not stated 48 N 124 W 1991 Diaphus theta 225 - 225 m