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All Journal Acta Aquatica: Aquatic Sciences Journal
Samsu Adi Rahman
Unismuh Luwuk
Materials Science & Nanotechnology Other

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The effect of different LED light colors on the color performance of neon tetra (Paracheirodon innesi) Samsu Adi Rahman; Erwin Wuniarto; Dicki Alif Saputra
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica, Vol. 13: No. 1 (April, 2026)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v13i1.24969

Abstract

The neon tetra (Paracheirodon innesi) is a popular ornamental fish known for its unique colors. Neon tetras emit a blue neon color with a red gradient. However, the fish may experience color fading when kept for long periods. This study aims to investigate the effect of different colored LED lights on enhancing the color quality of neon tetra (P. innesi). The research was conducted from August to September at the Integrated Laboratory of Muhammadiyah University Luwuk. The study used a Completely Randomized Design (CRD) with four treatments: control (no light), Treatment A: (red LED), Treatment B: (blue LED), and Treatment C: (green LED). The color quality of the neon tetra was visually observed using a camera from a distance of 10 cm. The color data was analyzed using Adobe Photoshop version 25.9 by measuring the RGB values. The results showed that the use of different colored LED lights had a significant effect, with the best RGB red value of 43.33 and the best RGB blue value of 33.30. The conclusion is that red LED lights enhance the RGB red value, and blue LED lights enhance the RGB blue value in neon tetra colors. Keywords: LED Lights; Neon Tetra; Ornamental Fish; Paracheirodon innesi; RGB
Identification and pathogenicity of bacteria in Banggai Cardinalfish (Pterapogon kauderni) Samsu Adi Rahman; Sri Sukari Agustina; Nurul Izza Dg. Pageso
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica, Vol. 12: No. 3 (December, 2025)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v12i3.25151

Abstract

The banggai cardinalfish (Pterapogon kauderni) is an endemic fish species in the Banggai waters of Central Sulawesi, with an attractive body shape, making it a prime target for ornamental fish hobbyists. One of the causes of the decline in the Banggai cardinalfish population is disease infection. This study aims to identify pathogenic bacteria that infect the Banggai cardinalfish and to determine their pathogenicity levels. The research was conducted in two stages: first, isolation and identification of bacteria from the Banggai cardinalfish, and second, pathogenicity tests of the identified bacteria. Four bacterial isolates were obtained from the Banggai cardinalfish, and based on morphological characteristics and biochemical tests, four bacterial types were identified according to Bergey’s Manual of Determinative Bacteriology, namely Microbacterium spp., Rhodococcus spp., Bacillus sp., and Edwardsiella spp. The bacterium with the highest pathogenicity toward the Banggai cardinalfish was Bacillus sp., followed by Edwardsiella spp., Microbacterium spp., and Rhodococcus spp. Based on these results, it can be concluded that the identified bacteria are capable of killing the Banggai cardinalfish. Keywords: Bacterial; Banggai Cardinalfish; Identification; Isolates; Pathogenicity
Ichthyofauna diversity on artificial reefs in kilo lima coastal waters, Banggai Regency, Central Sulawesi Samsu Adi Rahman; Indradi Noor Akbar; M. Arief Dharmawan; Nia Fahira; Achmad Alvinsyah Rasyidi; Sifa Amalia; Rizky Aulia Sari
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica, Vol. 13: No. 2 (August, 2026)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v13i2.27335

Abstract

Degradation of natural coral reef ecosystems in the coastal waters of Kilo Lima Beach due to anthropogenic activities has led to a decline in reef fish populations. The installation of artificial reefs has emerged as a rehabilitation strategy to provide new habitats for marine biota. This study aims to identify species diversity, population abundance, and the distribution of ichthyofauna across three types of artificial reef structures (Kubah, Dinoreef, and Carreef) in the waters of Kilo Lima Beach, Banggai Regency. This study evaluates the effectiveness of artificial reefs in Kilo Lima waters (April 2025–April 2026) using the Underwater Visual Census (UVC) method. Results indicate that artificial reefs significantly increase reef fish richness and density. Dinoreef recorded the highest species richness (47 species), while carreef reached the highest population density (5.7 ind/m²). The community is dominated by major fish groups (>80%), confirming the artificial reefs' function as a refuge area. The highest diversity index was achieved five months post-deployment (H’ = 3.50) before declining due to the dominance of specific species. The presence of associated biota and optimal water quality confirm a successful ecological succession. In conclusion, artificial reefs are effective in rehabilitating marine ecosystems, though long-term monitoring is essential for optimal community stability. Keywords: Artificial Reefs; Banggai; Diversity; Ichthyofauna; Kilo Lima
Co-Authors Achmad Alvinsyah Rasyidi Dicki Alif Saputra Erwin Wuniarto Indradi Noor Akbar M. Arief Dharmawan Nia Fahira Nurul Izza Dg. Pageso Rizky Aulia Sari Sifa Amalia Sri Sukari Agustina