Abstract:
Catfish (Clarias gariepinus), which locally knows as 'keli'. is a sharptooth catfish in
aquaculture, and is highly recommended food fish in Africa. A total of twelve
isolates was successfully isolated from African catfish fry (Clarias gariepinus) at
Tok Jembal, Terengganu. The 12 isolates were identified as Aeromonas hydrophila
by using morphological, biochemical and physiological tests. Isolates grown on GSP
agar were selected. Of the 41 biochemical characteristics evaluated for all 12 strains
of Aeromonas, only 7 tests (17.07%) yielded differential result. These were motility,
gelatinase, indole production, arginine dihydrolase, arabinose, sorbitol and trehalose.
The bacterial identification also was done using reference from Bergey's manual of
determinative bacteriology 9
th
edition. Dendrogram was constructed from
combination result of morphological, biochemical and physiological tests usmg
Numerical Taxonomy Systems.
