composition of two dominant fish species in fringing shallow water of Bidong
Island, South China Sea, Malaysia
Mat Piah*, S.A. Kamaruddin, N.L. Buang and M.A. Ghaffar
Fisheries and Aquaculture Sciences, University Malaysia Terengganu, 21030
Kuala Terengganu, Terengganu, Malaysia
Author E-mail: firstname.lastname@example.org
Paper received : 06.08.2017
Revised received : 25.10.2017
Re-revised received :
Accepted : 28.12.2017
Aim: The age
composition of Monogrammed monocle bream, Scolopsis monogramma and
Fork-tailed threadfin bream, Nemipterus furcosus in fringing shallow
water of Bidong Island, South China Sea was studied for the first time.
Methodology: Fish samples were
collected by baited portable traps, gill netting and hand-lining during
pre-northeast monsoon season. A pair of otoliths were extracted by the open
hatch method, cleaned and embedded in epoxy resin. The fish age was
determined by counting the opaque zone in sectioned otoliths and was
validated by marginal increment analysis.
Results: This study found
that both species comprised of older fish with S. monogramma in
between 4 to 9 years and 4 to 8 years in N. furcosus. No smaller or
younger fish was observed, probably due to selective sampling efforts. The
marginal increment analysis recorded an increase of 11% from August to
September for S. monogramma and by using this increase, the growth
ring was expected to be completed in April. In N. furcosus, a 14%
increase was observed and expected to be completed in January.
Interpretation: This study
concluded that the S. monogramma and N. furcosus in the
fringing shallow water of Bidong Island comprised of older individuals.
Further studies should be carried out by extending the duration of sampling,
using a wider range of legal mesh and hook sizes to potentially obtain a more
comprehensive size range to investigate the growth parameters of the fish.
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