Abstract
Bacterial populations in the intestinal contents of seven coastal fishes were investigated qualita-tively and quantitatively, using seven agar media. Total viable counts ranged from 2.1×103 to 1.7×1010 cfu g-1. Three types of anaerobes, Bacteroidaceae, Clostridium and Gram-positive cocci, were isolated from dragonets, Japanese whiting, rudder fish and bambooleaf wrasse with densities ranging from 2.0×102 to 4.2×105 cfu g-1. Four of the nine subgroups of the genus Vibrio, along with genus Pseudomonas were distributed abundantly among the seven fish species, suggesting these micro-organisms are indigenous bacteria. Microfioras among coastal fishes and seawater were analyzed by the multivariate analysis using pattern similarity index.
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