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Biologica/ date on Fistularia commersonii
(Fritzsche and Schneider, 1995) suggests that this species
may live longer than estimated.
The analysis of growth rates indicates that bluespotted
cornetfish is a fast-growing species (k = 0 .49 year· 1). The
theoretical asymptotic totallength (TL:c = 102.39 cm) was
lower than the observed maximum (l07.5 cm). This is possi-
bly due to the low number of large individuals in our sample,
as only two specimens outnumbered the TL~ value.
Regarding weight-length relationship, our results show
positive allometry, indicating that bluespotted cornetfish
becomes heavier for its length as it increases in size (Woot-
ton, 1990). Positive allometry for F. commersonii were also
found in Israel (b = 3 .406) on 1073 specimens (Bariche and
Kajajian, 20 12) and in Lebanon waters (b = 3.35) on 47
individuals (Edelist, 20 12), contrarily to results of Erguden
et al. (2009), who reported a value of b = 2.504 on 12 speci-
mens from Turkish waters. Possibly, the best estimate is the
one published by Bariche and Kajajian (20 12) given the high
number of specimens analysed, distributed in a wide range
of sizes and periods. These authors also calculated regres-
sion coefficient by sex, obtaining similar results (b = 3.398
for males, b = 3.352 for females) . However, differences in
growth patterns in relation to the sampling area are expect-
ed, since growth is strongly influenced by environmental
parameters (e .g . temperature, salinity, etc.). A comparison of
growth rates and age parameters between invaded areas and
native waters will be possible only if new studies on age and
growth of bluespotted cornetfish are carried out.
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