STUDIES ON SOME PARASITICAL AND BACTERIAL DISEASES AFFECTING ORNAMENTAL FISH.

Abstract

Aims: Detect of some parasites and bacteria which cause diseases problems in some ornamental fish ; Fantail, Angel fish, Koi carp , Molly , Swordtail and Guppy. Methods and Results: one hundred and fifty apparently infected ornamental fish collected (25 of each species) from private ornamental fish shops, were examined in live condition for detection of any parasitic infestation and any abnormalities. Bacteriological examination of the previously mentioned fishes resulted in the detection of three bacterial species; Pseudomonas fluorescence, Aeromonas hydrophila and Staph aureus with total prevalence 11.3%,10%, and 2% respectively. The most isolated strain (Pseudomonas fluorescence)was identified by PCR technique, while parasitic infestation resulted in detection of Protozoal infestation with the prevalence of; Ichthyophthirius multifiliis16.6% Trichodina acuta 15.3% and Chilodonella 7.3%. Monogenia infestation (Gyrodactylus sp.) 16.3% and Crustacean infestation (Argulus foliaceus 20% and Lernea cyprinacea 3.3%). Antimicrobial sensitivity test of Aeromonas hydophilla suggested to be treated with Ciprofloxacin, Trimethoprim + sulphamethoxazole, Tetracycline, Amoxicillin or Gentamycin, Pseudomonas fluorescence suggested to be treated with Ciprofloxacin, Tetracycline or Streptomycin while S. aureus suggested to be treated with Ciprofloxacin, Ampicillin, Gentamycin or Amoxicillin. Eventually. Treatment of infested parasitic fishes was done by sodium chloride solution at conc. of 2.5% for 15 minutes showed a successful effect on the second day of treatment. Conclusions: addition of these antimicrobials with balanced ration for fish and good water quality will help on control and treatment of such condition of infection.