Actinopterygii (ray-finned fishes) > Myctophiformes
(Lanternfishes) > Myctophidae
(Lanternfishes) > Lampanyctinae
Etymology: Diaphus: Greek, dis, dia = through + Greek, physa, phyo = to beget, to have as offspring (Ref. 45335); theta: Named after the Greek letter and refers to the body photophores which are divided horizontally by a fine line of black pigment (Ref. 6885).
Environment: milieu / climate zone / depth range / distribution range
Marine; bathypelagic; depth range 10 - 3400 m (Ref. 50550), usually 10 - 400 m (Ref. 28981). Deep-water; 66°N - 20°S
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).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 11.4 cm TL male/unsexed; (Ref. 4925)
Morphology | Morphometrics
Epipelagic to mesopelagic (Ref. 31442). Feed at night or in the morning (Ref. 9199), on euphausiids, copepods, and amphipods (Ref. 11712). Oviparous, with planktonic eggs and larvae (Ref. 31442). Lipid content is 15.8 % in fresh body weight while wax ester is present in trace amounts (Ref. 9197). Minimum depth reported from Ref. 28981.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Clemens, W.A. and G.V. Wilby, 1961. Fishes of the Pacific coast of Canada. 2nd ed. Fish. Res. Bd. Canada Bull. (68):443 p. (Ref. 4925)
IUCN Red List Status (Ref. 119314)
CITES (Ref. 115941)
Threat to humans
Estimates of some properties based on models
Preferred temperature (Ref. 115969
): 4.8 - 15.3, mean 7.9 (based on 504 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00912 (0.00392 - 0.02121), b=3.03 (2.83 - 3.23), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.2 ±0.1 se; Based on diet studies.
Resilience (Ref. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low to moderate vulnerability (31 of 100) .