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Helcogramma larvata
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drawing shows typical species in Tripterygiidae.
Teleostei (teleosts) >
Blenniiformes
(Blennies) >
Tripterygiidae
(Triplefin blennies) > Tripterygiinae
Etymology:
Helcogramma:
Greek, helkos, -eos, -ous = ulcer, sore + Greek, gramma = letter, mark (Ref.
45335
)
.
More on authors:
Fricke
&
Randall
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; demersal; depth range 0 - 2 m (Ref.
12235
). Tropical
Western Indian Ocean: presently endemic to the North Male Atoll, Maldives.
Size / Weight / Age
Maturity: L
m
 
?
  range ? - ? cm
Max length : 2.2 cm SL male/unsexed; (Ref.
12235
)
Short description
Morphology
|
Morphometrics
Dorsal
spines
(total): 15 - 17;
Dorsal
soft rays
(total): 9-11;
Anal
spines
: 1;
Anal
soft rays
: 17 - 21;
Vertebrae
: 34 - 35. Diagnosis: Dorsal fin III + XI-XII+ 8-9, 2nd fin twice height of 1st; anal fin I + 16-18; pectoral rays 15 (1+7+7); pelvic fin I, 2, spine short and hidden, segmented rays simple, partially united by membrane. Vertebrae 10 + 24-25. LL total lateral scales 32-35; pored 20-22 scales, ends below 3rd dorsal fin; nape, belly, 1st and 2nd dorsal fin and anterior anal-fin base scaleless. Mandibular pores 2-3+1+2-3. Orbital cirrus small. Head length 3.5 in SL; eye 2.7, maxilla 2.1 in HL. Head, male masked ventrally, female with few dark spots. Fins pale, D1 with dusky distal margin. Live color unknown (Ref.
75031
).
Eggs are hemispherical and covered with numerous sticky threads that anchor them in the algae on the nesting sites (Ref.
240
). Larvae are planktonic which occur primarily in shallow, nearshore waters (Ref.
94114
).
Life cycle and mating behavior
Maturity
|
Reproduction
|
Spawning
|
Eggs
|
Fecundity
|
Larvae
Fricke, R. and J.E. Randall
, 1992. Tripterygiid fishes of the Maldives Islands, with descriptions of two new species (Teleostei: Blennioidei). Stuttg. Beitr. Naturkd. A Biol. (484):1-13. (Ref.
12235
)
IUCN Red List Status (Ref.
130435
)
Data deficient (DD)
; Date assessed:
07 May 2010
CITES
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
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Estimates based on models
Phylogenetic diversity index (Ref.
82804
): PD
50
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00562 (0.00258 - 0.01228), b=3.08 (2.89 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245
).
Trophic level (Ref.
69278
): 3.0 ±0.3 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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