Present study investigated fish community at 12 sites within Yudeungcheon Stream in October 2018 and May 2019 to understand the inhabit status of the endangered species Pseudopungtungia nigra. We collected 39 species and 2,554 individuals of fish, and the Fish Assessment Index (FAI) was evaluated as “Good (B)” with an average score of 66.8. Among collected fishes, 15 endemic and 2 invasive species, Micropterus salmoides and Lepomis macrochirus were identified. In the distribution survey of P. nigra, it appeared in a range of approximately 12 km from Maebawiyuwonji Park (St. 5) to Budnaedari Bridge (St. 10). Based on population collected in May, the age of P. nigra (female) were divided into three groups by the length-frequency distribution method: 1 year old (60~76 mm), 2 years old (82~99 mm), and more than 3 years old (100~117 mm). Total length of the minimum maturity individual was 60 mm, and was a 1 year old. The estimated average population size using the Jolly-Seber method was 5,804 individuals in the Suryeongyo Bridge. Our study provides fundamental information about the fish community and River health assessment in Yudeungcheon Stream. Furthermore, we are expected to provide ecological information of the P. nigra, consequently helping to establish conservation and restoration plans for endangered species.

서 론
재료 및 방 법
    1. 조사시기 및 조사지점
    2. 조사방법
결 과
    1. 조사지 수환경
    2. 어류상과 군집분석
    3. 하천건강성 평가
    4. 감돌고기 분포조사
    5. 성숙연령 및 서식 개체군 크기
고 찰
적 요
REFERENCES

• 곽영호(국립수산과학원 중앙내수면연구소) | Yeong-Ho Kwak (Inland Fisheries Research Institute, NIFS, Geumsan 32762, Republic of Korea)
• 김강래(국립낙동강생물자원관) | Kang-Rae Kim (Animal & Plant Research Department, Nakdonggang National Institute of Biological Resources, NNIBR, Sangju 37242, Republic of Korea)
• 방인철(순천향대학교 생명시스템학과) | In-Chul Bang (Department of Life Sciences and Biotechnology, Soonchunhyang University, Asan 31538, Republic of Korea) Corresponding author