Morphology of Lemeduk Fish

Oct 13, 2025 by windailys.com 85 views

Abundance and Morphology of Lemeduk Fish (Barbonymus Schwanenfeldii) in the Tasik River, Torgamba District, Labuhanbatu Selatan Regency, North Sumatra Province

Introduction

The Tasik River, located in the Torgamba District of Labuhanbatu Selatan Regency, North Sumatra Province, is home to a diverse range of fish species, including the Lemeduk fish, also known as the Tinfoil Barb (Barbonymus Schwanenfeldii). This study aims to investigate the abundance, morphology, and growth of Lemeduk fish in the Tasik River, providing valuable insights into the conservation and management of fish resources in the region.

Research Methodology

The research was conducted in July to August 2020, using a mesh size of 1.25 inches. A total of 176 Lemeduk fish were successfully collected from the Tasik River, with the highest abundance recorded at Station I, with 2 individuals per square meter (ind/m²). The physical dimensions of the fish were also measured, with a total weight ranging from 2 to 47 grams, and a total length between 60 to 143 mm.

Abundance of Lemeduk Fish

The abundance of Lemeduk fish in the Tasik River was found to be relatively high, with a total of 176 individuals collected from the three stations. The highest abundance was recorded at Station I, with 2 ind/m², while stations II and III each recorded 1 ind/m². This suggests that the Lemeduk fish population in the Tasik River is relatively healthy and abundant.

Morphology of Lemeduk Fish

The morphology of Lemeduk fish was found to have several distinct characteristics, including:

Literal Literal (LL): 31-33
Body Circular Scales (SMB): 24-26
Scales in Front of the Backfall (SDSP): 12-14
Scales around the Tail Stem (SSBE): 12
Doorfish Formula (DF): DI.8-i9
Stomach Fin Formula (VF): V8-10
Pectoral Fins Formula (PF): P12-14
Rectal Fins Formula (AF): AI.5-6
Tail Fin Formula (CF): C14

These characteristics are unique to the Lemeduk fish and can be used to identify the species.

Growth Pattern of Lemeduk Fish

Further analysis of the relationship between length and weight of Lemeduk fish shows a positive allometric growth pattern, with a value of B of 3,2959. This indicates that the increase in fish weight takes place faster than the length of its length. This growth pattern is a good indicator of the health and adaptation of the Lemeduk fish population in the Tasik River.

Growth Model of Lemeduk Fish

To understand the growth of Lemeduk fish deeper, the Von Bertalanffy growth model was used. The equation for the growth model is:

Lt = 143.85 * (1 - * Exp (-1.6 * (T - (-0.0634))))

The value of L∞ (maximum length) is 143.85 mm, with a growth acceleration (K) of 1.6 per year. The zero time of growth (T0) is -0.0634 years, and the maximum time (TMAX) was obtained at 1,8116 years.

Conclusion

This study provides important information about the abundance and morphology of Lemeduk fish in the Tasik River. The results show that the Lemeduk fish population in the Tasik River is relatively healthy and abundant, with a positive allometric growth pattern. This is a good indicator for managing fish resources in the region. Increased understanding of this species is expected to support sustainable conservation and management of fisheries.

Recommendations

Based on the findings of this study, the following recommendations are made:

Conservation efforts: The Lemeduk fish population in the Tasik River should be conserved and protected to ensure the long-term sustainability of the species.
Fisheries management: The fisheries management in the Tasik River should be improved to ensure that the Lemeduk fish population is not overfished.
Further research: Further research should be conducted to understand the ecology and behavior of the Lemeduk fish in the Tasik River.

By implementing these recommendations, the Lemeduk fish population in the Tasik River can be conserved and managed sustainably, ensuring the long-term health of the ecosystem.
Q&A: Abundance and Morphology of Lemeduk Fish (Barbonymus Schwanenfeldii) in the Tasik River, Torgamba District, Labuhanbatu Selatan Regency, North Sumatra Province

Frequently Asked Questions

Q: What is the Lemeduk fish? A: The Lemeduk fish, also known as the Tinfoil Barb (Barbonymus Schwanenfeldii), is a species of fish found in the Tasik River, Torgamba District, Labuhanbatu Selatan Regency, North Sumatra Province.

Q: What is the purpose of this study? A: The purpose of this study is to investigate the abundance, morphology, and growth of Lemeduk fish in the Tasik River, providing valuable insights into the conservation and management of fish resources in the region.

Q: How was the research conducted? A: The research was conducted in July to August 2020, using a mesh size of 1.25 inches. A total of 176 Lemeduk fish were successfully collected from the Tasik River, with the highest abundance recorded at Station I, with 2 individuals per square meter (ind/m²).

Q: What are the physical dimensions of the Lemeduk fish? A: The physical dimensions of the Lemeduk fish were measured, with a total weight ranging from 2 to 47 grams, and a total length between 60 to 143 mm.

Q: What are the morphology characteristics of the Lemeduk fish? A: The morphology characteristics of the Lemeduk fish include:

Literal Literal (LL): 31-33
Body Circular Scales (SMB): 24-26
Scales in Front of the Backfall (SDSP): 12-14
Scales around the Tail Stem (SSBE): 12
Doorfish Formula (DF): DI.8-i9
Stomach Fin Formula (VF): V8-10
Pectoral Fins Formula (PF): P12-14
Rectal Fins Formula (AF): AI.5-6
Tail Fin Formula (CF): C14

Q: What is the growth pattern of the Lemeduk fish? A: The growth pattern of the Lemeduk fish is a positive allometric growth pattern, with a value of B of 3,2959. This indicates that the increase in fish weight takes place faster than the length of its length.

Q: What is the Von Bertalanffy growth model? A: The Von Bertalanffy growth model is a mathematical model used to describe the growth of organisms. The equation for the growth model is:

Lt = 143.85 * (1 - * Exp (-1.6 * (T - (-0.0634))))

Q: What are the implications of this study? A: The results of this study have important implications for the conservation and management of fish resources in the region. The Lemeduk fish population in the Tasik River is relatively healthy and abundant, with a positive allometric growth pattern. This is a good indicator for managing fish resources in the region.

Q: What are the recommendations of this study? A: Based on the findings of this study, the following recommendations are made:

Conservation efforts: The Lemeduk fish population in the Tasik River should be conserved and protected to ensure the long-term sustainability of the species.
Fisheries management: The fisheries management in the Tasik River should be improved to ensure that the Lemeduk fish population is not overfished.
Further research: Further research should be conducted to understand the ecology and behavior of the Lemeduk fish in the Tasik River.

By implementing these recommendations, the Lemeduk fish population in the Tasik River can be conserved and managed sustainably, ensuring the long-term health of the ecosystem.