We quantified temporal and spatial changes in the habitat for fish populations, the distribution of mandarin fish(Siniperca scherzeri) and an introduced species, largemouth bass(Micropterus salmoides) in Lake Paro and inflowing streams. The number of fish species identified in Lake Paro and the tributary streams included 10 families, 24 species and 10 families 30 species, respectively. The dominant fish species in Lake Paro were Zacco platypus, Hemibarbus labeo, Squalidus gracilis majimae, S. scherzeri and Tridentiger brevispinis, Z. platypus, Z. koreanus, and S. gracilis majimae in the inflowing streams. Although the habitat segregation for S. scherzeri and M. salmoides occurs, these two species showed the use of the fishes of the family Gobiidae as an important prey item based on IRI analysis. S. scherzeri and M. salmoides preyed mainly on T. brevispinis(67.4 %) and R. brunneus(84.0 %), respectively. The species preyed on by S. scherzeri and M. salmoides were benthic fishes that inhabit shallow water depths around the lake and have little swimming ability.

INTRODUCTION
 MATERIALS AND METHODS
  1. Study Area
  2. Water Quality Survey
  3. Fish Community Survey
  4. Dietary Analysis of S. scherzeri and M. salmoides
 RESULTS
  1. Environmental Factors
  2. Seasonal Changes of Fish Communities
  3. Dietary Analysis
  4. Habitat Distribution of Fish Communities
  5. Growth Rate and Obesity Analysis
 DISCUSSION
 REFERENCES

• Jaeyong Lee(Environmental Technological Institute, Nature and Human Co. Ltd)
• Kwang yeol Lee(Research Center for Fish, Environmental Research Institute, Kangwon National University)
• Sungchul Park(Research Center for Fish, Environmental Research Institute, Kangwon National University)
• Jaeseok Choi(Research Center for Fish, Environmental Research Institute, Kangwon National University)
• Hong gi Jang(Environmental Technological Institute, Nature and Human Co. Ltd.)
• Joon Chul Kim(Dept. of Biological Science, Kangwon National Univ) Corresponding author