More information on Costia Disease
Main Ref: 193  
Disease type: Parasitic infestations (protozoa, worms, etc.)  
Disease name: Costia Disease  
Other names: Costiasis; Turbidity of the skin; Ichthyobodo necatrix  
Caus. agent: Costia necatrix  
Group:    
Part of body and/or behavior affected by disease:
 Skins and/or fins  Belly  Swimming behavior
 Gills  Anus  Other behavior
 Eyes  Viscera Afflicted  Other symptoms
Fish affected: Cyprinidae, Salmonidae   
Symptoms: High mucus production leads to coating of skin, ulcer, bristeling of scales, swaying and clamped fins, scraping.   
Treatments: Increase water inflow, NaCl 7 to 10 g/l water for 30 min to 12 hours, formalin bath 259 ml/l water for 15 min. Increase water inflow, NaCl 7 to 10 g/l water for 30 min to 12 hours, formalin. Another treatment is the use of FMC (1 liter of Formaldehyde (37%) (or 100 ml), 3.7 gm of Malachite Green oxalate (or 0.37 gm), 3.7 gm of Methylene Blue (or 0.37 gm)). With dosage of 1.0-1.2 ml/100 l tank water or 25 drops/100 l or 1 drop/gallon. This treatment should be administer with an anti-bacterial drugs such as Nifurpirinol (Dose: 10-15 mg/100 l for an unlimited time (or as instructed)), Tetracycline (Dose: 3-4 gm/100 l for 2-3 days, Water change after treatment, Mixed with food: 0.5 gm/100 gm fish food to be fed during 5 days), Nitrofurazone (Dose: 250-500 mg/100 l for 3 days At least 50% water change after treatment is recommended) etc. In cases of mass infection, a 50% water change after one day of treatment and add a half dose of FMC administered on the first day. Salt (1handful/5 gallon) could also be administered. Ref. 41805.  
Prophylaxis: Optimal water condition. Avoid overcrowding.   
Remarks: In rare cases the parasite can infect the intestine via the anus. Ref. 41805.  
Mortality and seasonality
Mortality: medium (10% - 30 %)
Seasonality:
Entered by: Achenbach, Imke on 10.19.90
Modified by: Palacio, Allan on 01.26.03
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tn_CostiaD0.jpg
picture (CostiaD0.jpg) by Bassleer, G.
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picture (CostiaD1.jpg) by Bassleer, G.
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picture (CostiaD2.jpg) by Bassleer, G.
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picture (CostiaD3.jpg) by Bassleer, G.
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picture (CostiaD4.jpg) by Bassleer, G.
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picture (CostiaD5.jpg) by Bassleer, G.
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picture (CostiaD6.jpg) by Bassleer, G.
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picture (CostiaD8.jpg) by Bassleer, G.
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picture (CostiaD9.jpg) by Bassleer, G.
tn_CostiaDa.jpg
picture (CostiaDa.jpg) by Bassleer, G.
tn_CostiaDb.jpg
picture (CostiaDb.jpg) by Bassleer, G.
tn_CostiaDc.jpg
picture (CostiaDc.jpg) by Bassleer, G.
tn_CostiaDd.jpg
picture (CostiaDd.jpg) by Bassleer, G.
tn_CostiaDe.jpg
picture (CostiaDe.jpg) by Bassleer, G.
tn_CostiaDf.jpg
picture (CostiaDf.jpg) by Bassleer, G.
tn_CostiaDg.jpg
picture (CostiaDg.jpg) by Bassleer, G.
tn_CostiaDh.jpg
picture (CostiaDh.jpg) by Bassleer, G.
tn_CostiaDi.jpg
picture (CostiaDi.jpg) by Bassleer, G.
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