Table-1.

The pathogenicity test of A. hydrophila to catfish (P. hypophthalmus).

Density	Number of fish	Observation
		0 h	12 h	24 h	48 h	72 h	96 h
106	5	Normal	Normal	Decreased appetite	Mouth and tail redness	Flickertail	One fish dead
107	5	Normal	Normal	Decreased appetite	Flickertail	Two fishes dead	-
108	5	Normal	Not active	Flickertail	One fish dead	Two fishes dead	Three fishes dead
109	5	Normal	Not active	Two fishes dead	Three fishes dead	Four fishes dead	Five fishes dead
1010	5	Normal	Skin redness	Four fishes dead	Five fishes dead	-	-
Control	5	Normal	Normal	Normal	Normal	Normal	Normal

A. hydrophila=Aeromonas hydrophila, P. hypophthalmus=Pangasius hypophthalmus