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Sargocentron iota, Dwarf squirrelfish
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Sargocentron iota
Picture by
Randall, J.E.
Teleostei (teleosts) >
Holocentriformes
(Squirrelfishes, soldierfishes) >
Holocentridae
(Squirrelfishes, soldierfishes) > Holocentrinae
Etymology:
Sargocentron:
Greek, sargos = sargus + Greek, kentron = sting (Ref.
45335
)
;
iota:
From the Greek alphabet's smaller letter, referring to anything small.
.
More on author:
Randall
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; reef-associated; depth range 1 - 34 m (Ref.
27370
). Tropical
Indo-Pacific.
Size / Weight / Age
Maturity: L
m
 
?
  range ? - ? cm
Max length : 7.7 cm SL male/unsexed; (Ref.
27370
)
Dorsal
spines
(total): 11;
Dorsal
soft rays
(total): 12-14;
Anal
spines
: 4;
Anal
soft rays
: 9;
Vertebrae
: 27. Body red with a very narrow darker red stripe separating longitudinal scale rows; spinous part of dorsal fin red; mottled faintly with white, the outer part of each membrane deeper red; remaining fins with red rays and clear membranes. 4-5 oblique rows of scales on cheek. Body depth 2.3-2.6 in SL; head length 2.5-2.6 in SL. Rounded anterior end of nasal bone; moderately large and spineless nasal fossa; surface of nasal bone between fossa and edge of premaxillary groove with a prominent retrorse spine; median edge of nasal bone (margin of premaxillary groove) with a small recumbent retrorse spine; longest dorsal spine 2.05-2.75 in head length; third anal spine 1.5-1.6 in head length; broadly rounded caudal fin lobes (Ref.
27370
). Strongly serrated scales (Ref.
37816
).
Inhabits steep outer reef slopes (Ref.
37816
). Benthopelagic (Ref.
58302
). Secretive (Ref.
37816
). Cryptic, never seen during day, remain close to reef shelter at night (Ref 90102).
Life cycle and mating behavior
Maturity
|
Reproduction
|
Spawning
|
Eggs
|
Fecundity
|
Larvae
Randall, J.E.
, 1998. Revision of the Indo-Pacific squirrelfishes (Beryciformes: Holocentridae: Holocentrinae) of the genus
Sargocentron
, with descriptions of four new species. Indo-Pac. Fish. (27):105 p. (Ref.
27370
)
IUCN Red List Status (Ref.
130435
)
Least Concern (LC)
; Date assessed:
04 March 2015
CITES
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
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Estimates based on models
Preferred temperature (Ref.
123201
): 24.7 - 29, mean 27.1 °C (based on 617 cells).
Phylogenetic diversity index (Ref.
82804
): PD
50
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01622 (0.00774 - 0.03400), b=2.97 (2.80 - 3.14), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245
).
Trophic level (Ref.
69278
): 3.4 ±0.4 se; based on size and trophs of closest relatives
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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Page last modified by :
mrius-barile
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