Size, growth and age of two congeneric archer fishes (Toxotes jaculatrix Pallas, 1767 and Toxotes chatareus Hamilton, 1822) Inhabiting Malaysian coastal waters

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Abstract

The size, growth and age of two congeneric archer fishes Toxotes jaculatrix and Toxotes chatareus collected from Johor coastal waters, Malaysia was studied. The standard length (SL) and body weight (BW) ranges of the two species caught in the study area were 7-122 cm SL (935±0.19 cm), 11-55 g BW (27.04±1.62 g) and 8-12.2 cm SL (9.88±0.17 cm), 15.12-54 g BW (3052±1.72 g), respectively. The ratio of male and female specimens of T. jaculatrix and T. chatareus were 70%, 30% and 68.6%, 31.4%, respectively. The estimated von Bertalanffy growth parameters were L= 12.78 cm, 1359 cm and K = 1.46 year1, 153 year1 with a growth performance index of ø= 5.48 and 5.64 in both species, respectively. In order to determine the age, the technique of reading and interpretation of the daily growth increments/rings in the sagittae otoliths and scales were applied. Daily growth increments and annulus of scales counts confirmed that the ages of the samples for both species were typically less than one year (<1) and the remnant samples were between one and two years. The similarity between scale and otolith age determination was identical and dissimilarity was observed only in few samples of both species.

Original languageEnglish
Pages (from-to)697-704
Number of pages8
JournalSains Malaysiana
Volume39
Issue number5
Publication statusPublished - Oct 2010

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coastal water
otoliths
body weight
age determination
sampling
Malaysia
growth performance
Toxotes
Toxotidae
methodology

Keywords

  • Growth
  • Otolith
  • Scale
  • Size
  • Toxotes chatareus
  • Toxotes jaculatrix

ASJC Scopus subject areas

  • General

Cite this

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title = "Size, growth and age of two congeneric archer fishes (Toxotes jaculatrix Pallas, 1767 and Toxotes chatareus Hamilton, 1822) Inhabiting Malaysian coastal waters",
abstract = "The size, growth and age of two congeneric archer fishes Toxotes jaculatrix and Toxotes chatareus collected from Johor coastal waters, Malaysia was studied. The standard length (SL) and body weight (BW) ranges of the two species caught in the study area were 7-122 cm SL (935±0.19 cm), 11-55 g BW (27.04±1.62 g) and 8-12.2 cm SL (9.88±0.17 cm), 15.12-54 g BW (3052±1.72 g), respectively. The ratio of male and female specimens of T. jaculatrix and T. chatareus were 70{\%}, 30{\%} and 68.6{\%}, 31.4{\%}, respectively. The estimated von Bertalanffy growth parameters were L∞= 12.78 cm, 1359 cm and K = 1.46 year1, 153 year1 with a growth performance index of {\o}= 5.48 and 5.64 in both species, respectively. In order to determine the age, the technique of reading and interpretation of the daily growth increments/rings in the sagittae otoliths and scales were applied. Daily growth increments and annulus of scales counts confirmed that the ages of the samples for both species were typically less than one year (<1) and the remnant samples were between one and two years. The similarity between scale and otolith age determination was identical and dissimilarity was observed only in few samples of both species.",
keywords = "Growth, Otolith, Scale, Size, Toxotes chatareus, Toxotes jaculatrix",
author = "Das, {Simon Kumar} and {Abd. Ghaffar}, Mazlan and Abdullah Samat and {Che Cob}, Zaidi and A. Aziz",
year = "2010",
month = "10",
language = "English",
volume = "39",
pages = "697--704",
journal = "Sains Malaysiana",
issn = "0126-6039",
publisher = "Penerbit Universiti Kebangsaan Malaysia",
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TY - JOUR

T1 - Size, growth and age of two congeneric archer fishes (Toxotes jaculatrix Pallas, 1767 and Toxotes chatareus Hamilton, 1822) Inhabiting Malaysian coastal waters

AU - Das, Simon Kumar

AU - Abd. Ghaffar, Mazlan

AU - Samat, Abdullah

AU - Che Cob, Zaidi

AU - Aziz, A.

PY - 2010/10

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N2 - The size, growth and age of two congeneric archer fishes Toxotes jaculatrix and Toxotes chatareus collected from Johor coastal waters, Malaysia was studied. The standard length (SL) and body weight (BW) ranges of the two species caught in the study area were 7-122 cm SL (935±0.19 cm), 11-55 g BW (27.04±1.62 g) and 8-12.2 cm SL (9.88±0.17 cm), 15.12-54 g BW (3052±1.72 g), respectively. The ratio of male and female specimens of T. jaculatrix and T. chatareus were 70%, 30% and 68.6%, 31.4%, respectively. The estimated von Bertalanffy growth parameters were L∞= 12.78 cm, 1359 cm and K = 1.46 year1, 153 year1 with a growth performance index of ø= 5.48 and 5.64 in both species, respectively. In order to determine the age, the technique of reading and interpretation of the daily growth increments/rings in the sagittae otoliths and scales were applied. Daily growth increments and annulus of scales counts confirmed that the ages of the samples for both species were typically less than one year (<1) and the remnant samples were between one and two years. The similarity between scale and otolith age determination was identical and dissimilarity was observed only in few samples of both species.

AB - The size, growth and age of two congeneric archer fishes Toxotes jaculatrix and Toxotes chatareus collected from Johor coastal waters, Malaysia was studied. The standard length (SL) and body weight (BW) ranges of the two species caught in the study area were 7-122 cm SL (935±0.19 cm), 11-55 g BW (27.04±1.62 g) and 8-12.2 cm SL (9.88±0.17 cm), 15.12-54 g BW (3052±1.72 g), respectively. The ratio of male and female specimens of T. jaculatrix and T. chatareus were 70%, 30% and 68.6%, 31.4%, respectively. The estimated von Bertalanffy growth parameters were L∞= 12.78 cm, 1359 cm and K = 1.46 year1, 153 year1 with a growth performance index of ø= 5.48 and 5.64 in both species, respectively. In order to determine the age, the technique of reading and interpretation of the daily growth increments/rings in the sagittae otoliths and scales were applied. Daily growth increments and annulus of scales counts confirmed that the ages of the samples for both species were typically less than one year (<1) and the remnant samples were between one and two years. The similarity between scale and otolith age determination was identical and dissimilarity was observed only in few samples of both species.

KW - Growth

KW - Otolith

KW - Scale

KW - Size

KW - Toxotes chatareus

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