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Krefftichthys anderssoni, Rhombic lanternfish
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Teleostei (teleosts) >
Myctophiformes
(Lanternfishes) >
Myctophidae
(Lanternfishes) > Myctophinae
Etymology:
Krefftichthys:
Named for Dr. Gerhard Krefft (Institut fur Seefischerei, Hamburg) for his pioneering work and contributions to the knowledge of deep-sea fishes.
.
More on author:
Lönnberg
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; bathypelagic; oceanodromous (Ref.
51243
); depth range ? - 2700 m (Ref.
58018
). Deep-water; 32°S - 78°S
Ranges from the Antarctic Divergence/Weddell-Scotia Confluence to the northern boundary limits (usually considered to coincide with the geographic location of the Subtropical Convergence), and further north in meridional currents: to 32°-33°S in Peruvian Current and to 34°S in Falkland Current.
Size / Weight / Age
Maturity: L
m
 
?
  range ? - ? cm
Max length : 7.1 cm SL male/unsexed; (Ref.
5182
)
Dorsal
spines
(total): 0;
Dorsal
soft rays
(total): 12-14;
Anal
spines
: 0;
Anal
soft rays
: 17 - 20
Oceanic (Ref.
4066
). Found in the upper 50-100 m south of Antarctic Polar Front at night, but deeper (500-600 m) north of Antarctic Polar Front and at depths greater than 1,000 m at Subtropical Convergence. Feeds mainly on copepods, and also on euphausiids and amphipods.
Life cycle and mating behavior
Maturity
|
Reproduction
|
Spawning
|
Eggs
|
Fecundity
|
Larvae
Hulley, P.A.
, 1990. Myctophidae. p. 146-178. In O. Gon and P.C. Heemstra (eds.) Fishes of the Southern Ocean. J.L.B. Smith Institute of Ichthyology, Grahamstown, South Africa. (Ref.
5182
)
IUCN Red List Status (Ref.
130435
)
Least Concern (LC)
; Date assessed:
04 February 2009
CITES
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
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Zoological Record
Estimates based on models
Preferred temperature (Ref.
123201
): 0.4 - 7.5, mean 3.1 °C (based on 444 cells).
Phylogenetic diversity index (Ref.
82804
): PD
50
= 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00692 (0.00297 - 0.01609), b=3.13 (2.93 - 3.33), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245
).
Trophic level (Ref.
69278
): 3.1 ±0.19 se; based on food items.
Resilience (Ref.
120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153
): Low vulnerability (10 of 100).
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- 20 July 2016
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