1. 1) http://www.mlit.go.jp/river/shishin_guideline/kankyo/kankyou/sakana_tebiki/pdf/hyoushi.pdf
2. 2) Blaxter, J.H.S.: Swimming speeds of fish, FAO Conference on Fish Behaviour in Relation to Fishing Techniques and Tactics, pp.1-32, 1967.
3. 3) Brett, J.R.: The energy required for swimming by young sockeye salmon with a comparison of the drag force on dead fish, Trans. R. Soc. Can., Vol.4, No.1, pp.441-457, 1963.
4. 4) Brett, J.R.: Swimming performance of sockeye salmon (Oncorhynchus nerca) in relation to fatigue time and temperature, J. Fish. Res. Bd. Can., Vol.24, pp.1731-1741, 1967.
5. 5) Blaxter, J.H.S. and Dickson, W.: Observations on the swimming speeds of fish, J. Cons. Perm. Int. Explor. Mer., Vol.24, pp.472-479, 1959.