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Ardyansyah Kahar
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Earth & Planetary Sciences

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A TAXONOMIC STUDY OF THE BARONANG FISH Siganus fuscescens (Houttuyn, 1782) BASED ON MORPHOLOGICAL CHARACTERISTICS IN THE WATERS OF THE SPERMONDE ISLANDS Putri Andira Ramadhan Rivai; Andi Iqbal Burhanuddin; Ardyansyah Kahar; Nurjirana Nurjirana
Jurnal Ilmu Kelautan SPERMONDE VOLUME 12 NOMOR 2, 2026
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35911/jiks.v12i2.52850

Abstract

Siganus fuscescens, a herbivorous fish, is integral to the equilibrium of coastal ecosystems and possesses economic significance for local communities. Despite its importance, taxonomic research focusing on the morphological characteristics of this species in the Spermonde Islands' waters is relatively scarce. This study seeks to investigate the taxonomy of S. fuscescens through morphometric and meristic analyses. Fifty specimens were procured from the Paotere Fish Auction Market in Makassar, representing catches from the Spermonde Islands' waters. Morphometric characters were measured using a digital caliper, while meristic characters were assessed by counting spines and fin rays, followed by analysis using Principal Component Analysis (PCA). The study's findings confirm that the morphological characteristics of the specimens align with the diagnostic features of S. fuscescens. The primary meristic characters are conserved at the genus level, whereas variations in the number of pectoral and caudal fin rays may serve as distinguishing features between species. PCA indicated that over 95% of morphological variation is attributable to body size, with minimal variation in shape. These results underscore the efficacy of morphometric, meristic, and multivariate analysis approaches in facilitating the taxonomic identification of S. fuscescens and enhancing the understanding of its morphological characteristics in the Spermonde Islands' waters.
MORPHOMETRIC AND MERISTIC CHARACTERISTCS Of Siganus virgatus (Valenciennes, 1835) In THE SPERMONDE WATERS, SOUTH SULAWESI Shakina Sanusi; Andi Iqbal Burhanuddin; Ardyansyah Kahar; Nurjirana Nurjirana
Jurnal Ilmu Kelautan SPERMONDE VOLUME 12 NOMOR 2, 2026
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35911/jiks.vi.53411

Abstract

Indonesia is known as a center of marine biodiversity, including the family Siganidae. However, detailed data on specific morphological characteristics in dynamic regions such as the Spermonde Islands remain limited. This study aims to comprehensively describe the morphological characteristics of Siganus virgatus in the waters of the Spermonde Islands as a basis for taxonomic data and fisheries management. A total of 50 specimens were collected from the Paotere Fish Landing Center during January–February 2026 and analyzed using morphometric and meristic approaches. The results show that S. virgatus in this region has a distinctive oval body profile with two dark brown diagonal lines as the primary diagnostic features. Morphometric data indicate an average total length of 158.8 mm, with the shape of the caudal fin changing from notched to moderately forked as individuals mature. Principal Component Analysis (PCA) revealed that three principal components explained 82.94% of the total data variation, with PC1 dominated by body size (98.84%), while PC2 and PC3 represented body shape factors, specifically trunk proportions and caudal fin indentation. Overall, the morphological characteristics of specimens from the Spermonde Islands are consistent with the standard taxonomic description for the Western Indo-Pacific region, thereby reinforcing the accuracy of species identification to support the sustainability of local fishery resources
MORPHOMETRIC AND MERISTIC CHARACTERISTICS OF THE BARONANG FISH Siganus canaliculatus (PARK, 1797) AS A BASIS FOR BIOSYSTEMATICS IN THE SPERMONDE ISLANDS Siti Nur Awaliah; Andi Iqbal Burhanuddin; Ardyansyah Kahar; Nurjirana Nurjirana
Jurnal Ilmu Kelautan SPERMONDE VOLUME 12 NOMOR 2, 2026
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35911/jiks.vi.53415

Abstract

The fish Siganus canaliculatus (Park, 1797) is a coastal fishery commodity in the Spermonde Islands that holds ecological value and serves as an important herbivorous fish in seagrass ecosystems, as well as possessing high economic value. This study aims to analyze morphometric and meristic characters as a basis for biosystematics to support accurate taxonomic identification and evaluation of the population structure of this fish in the Spermonde waters. A total of 50 fish were collected from the Paotere Fish Landing Site during January–February 2026. Morphometric analysis was conducted by measuring 25 body characters, following the protocol of Randall & Kulbicki (2005). Meristic analysis included counting the number of spines and rays in all fins, as well as supporting characters such as the number of longitudinal scales and gill rakers. Data variation was then tested using Principal Component Analysis (PCA) to identify the primary distinguishing characters. The results of the study showed that S. canaliculatus has a standard length (SL) ranging from 101.1–165.2 mm with a homogeneous laterally compressed body shape. Meristic characters were stable in the number of dorsal fin spines (13) and pectoral fin rays (15–18). PCA analysis revealed that morphometric diversity is dominated by size factors (PC 1 at 99.03%), with anterior body dimensions (Pre-dorsal Length and Pre-anal Length) serving as the most distinct  differentiating variables. The low variation in body shape indicates a population that tends to be uniform in the Spermonde Islands. This study provides updated biometric data specific to the Siganus canaliculatus population in the Spermonde Islands in 2026. The use of PCA analysis contributes scientifically to establishing the Pre-dorsal and Pre-anal parameters as key indicators for distinguishing fish stocks. This data serves as a crucial tool for sustainable fisheries resource management and the strengthening of the marine biosystematics database in South Sulawesi.
MORPHOMETRIC AND MERISTIC CHARACTERISTICS OF (THE BARONANG FISHSTREAMLINED SPINEFOOT, Siganus argenteus) (Quoy & Gaimard, 1825) IN THE SPERMONDE ISLANDS, SOUTH SULAWESI Risdayani Risdayani; Andi Iqbal Burhanuddin; Ardyansyah Kahar; Nurjirana Nurjirana
Jurnal Ilmu Kelautan SPERMONDE VOLUME 12 NOMOR 2, 2026
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35911/jiks.v12i2.53416

Abstract

Siganus argenteus (Quoy & Gaimard, 1825) is a reef herbivore that plays an important ecological role and has high economic value in coastal areas. This study aims to analyze the morphometric and meristic characteristics of S. argenteus in the Spermonde Islands, South Sulawesi. A total of 50 individuals were collected in January-February 2026 at the Paotere Fish Landing Site, Makassar. Analysis was conducted using morphometric, meristic, and Principal Component Analysis (PCA) approaches. Results showed that total fish length ranged from 174.7–214.2 mm with a mean of 192 mm, and standard length ranged from 144.4-192.7 mm with a mean of 159.4 mm. Meristic characters were relatively stable, namely (XIII) dorsal fin spines, (10) dorsal fin rays, VII anal fin spines, 9 anal fin rays, II ventral spines, and 3 ventral rays, while variation was found in the pectoral fin rays (15-18) and caudal fin rays (17-21). PCA results showed that Principal Component 1 accounted for 99.03% of the morphometric variation, with the Pre-dorsal Length (Pdl) character as the primary contributor. The low variation in Principal Component 2 (0.42%) indicates morphological homogeneity among individuals. The results indicate that the morphometric variation in S. argenteus is more influenced by body size than by differences in body shape.
Co-Authors Andi Iqbal Burhanuddin Nurjirana Nurjirana Putri Andira Ramadhan Rivai Risdayani Risdayani Shakina Sanusi Siti Nur Awaliah