Japanese Journal of Ichthyology
Volome 48, Number 1, May 25, 2001
Hybridization and introgression in speciation process of fishes
  Takahiko Mukai  … 1
Full Papers
Comparison of fish fauna among three types of rice fields in the Chikuma River basin
  Osamu Katano, Kazumi Hosoya, Kei'ichiroh Iguchi and Yoshimasa Aonuma  … 19
Fish fauna of the rivers in the Shima Region, Mie Prefecture, Central Japan
  Taiga Yodo, Tsuyoshi Yamashita, Tetsuya Sado, Izumi Taniyama and Seishi Kimura  … 27
Short Reports
Arecord of a threadfin, Eleutheronema tetradactylum, from Aomori Prefecture, norther Japan, and description of a newly-regognized diagnostic character for the species (Perciformes: Polynemidae)
  Hiroyuki Motomura, Hiroshi Senou and Yukio Iwatsuki  … 41
Clutch size and egg size in three species of Rhinogobius complex dwelling in a single stream
  Kazuaki Tamada  … 49
Courtship and spawning behavior of Eleotris oxycephala in an aquarium
  Toshio Matsuo and Hideki Takahama  … 53
Book Review  … 58
New Publications  … 59
Proceedings  … 60
Editorials  … 67
Japanese Abstracts  … 68

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