An experiment was conducted on the selection of artificial fish habitats by Silurus (parasilurus) asotus
according to their materials, and the effects of such materials on their behavior. Four pipes each of bamboo, vinyl
chloride, concrete and ceramic were placed on the tank bottom, The number of time Silurus asotus entered the
pipes of each material, as well as the number, length of stay and behavior of fish in the pipes were observed. The
percentage of pipes entered by Silurus asotus was 53.7%. The percentage of entry by material was hichest for
bamboo, followed by concrete, vinyl chloride and ceramic, The percentage of entry by two fish at the same time
was in the order of bamboo vinyl chloride, concrete and ceramic, and that of entry by three fish at the sane time
was in the order of bamboo, concrete, vinyl chloride and ceramic, Bamboo, pipes ranked the highest in all cases.
The good results with bamboo pipes both in terms of the number of fish entering and the length of their stay,
were presumed to be caused not only by the taxis of Silurus asotus, but also by the unique attractiveness or the
nature of bamboo, which hindets transmission of sound and vibration by absorbing vibrations, however, details
could not be elucidated in this experiment.