Fish diseases

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Protozoal & metazoal diseases


I – ecto parasitic protozoal diseases 1. Ichthyrophythriasis (fresh water white spot disease). 2. Cryptocaryonosis (marine white spot disease) 3. Grayish patches disease. a – trichodiniasis. b – chilodonellosis. c – Ichthyobodiasis (blue slime disease).

4. Red sore disease (epistylis infection) (heteropolaria infection)( bacterial parasitic complex)


1.Ichthyrophythriasis 1. Ichthyrophythriasis (fresh water white spot disease).


2.Cryptocaryonosis (marine white spot disease)


3.Grayish patches disease


A - trichodiniasis


B - chilodonellosis


C - Ichthyobodiasis (blue slime disease) (costiasis)


4. Red sore disease

(epistylis infection) (heteropolaria infection) (bacterial parasitic complex)


II – Ecto parasitic metazoal diseases 1. Monogenetic trematode: a – dactylegyrosis (gill fluke). b – garyrodactylosis (skin fluke).

2. leechiasis (leech infestation). 3. Parasitic crustaceans (parasitic copepods): a – ergasilosis. b – arygulosis (fish lice). c – learnoisis.


1. Monogenetic trematode

•(A) dactylegyrosis (gill fluke). •(B) & (C) garyrodactylosis (skin fluke).


a – dactylegyrosis (gill fluke).


b – garyrodactylosis (skin fluke)


2. leechiasis (leech infestation).


3. Parasitic crustaceans (parasitic copepods) a – ergasilosis (ergasilus disease)


3. Parasitic crustaceans (parasitic copepods) b - arygulosis (fish lice)


III – Endo parasitic protozoal diseases A) Internal organs infection: 1. hexamitiasis. 2. Whirling disease

(myxozoan infection) (black tail disease).

3. Henneguyan disease

(henneguiasis) (milk flesh disease).

B) Blood infection: a – exteracellular: 1- Trypansomiasis. 2- cryptobiasis.

b – interacellular: 1- hemogregarniasis. 2- babesiosomiasis.


A) Internal organs infection


1. hexamitiasis.


2. Whirling disease. (myxozoan infection) (black tail disease)


3. Henneguyan disease (henneguiasis) (milk flesh disease)


B) Blood infection


a – exteracellular: 1- Trypansomiasis

2- Cryptobiasis. (Sleeping sickness disease)


IV – Endo parasitic metazoal diseases A) Digenetic trematode: 1. Diplostomum spp

(eye fluke infection) (parasitic cataract)

2. Clinostomiasis (yellow grub disease). 3. Apophallus donicus (black spot disease). 4. Blood fluke B) Cestodes: C) Nematodes:

(sanguinicoliasis).


A) Digenetic trematode


1. Diplostomum spathaceum (eye fluke infection) (parasitic cataract)


2. Clinostomiasis (yellow grub disease)


Mycotic diseases


1 - saprolegnosis





2 - branchiomycosis



Bacterial diseases


1 – fin rot disease




2 – peduncle disease


Bacterial hemorrhagic septicemia


Acute form





Acute form (P.M)



Sub acute form (ascitis form)


Chronic form (ulcerative form)



Acute, sub acute & chronic form of bacterial hemorrhagic septicemia


T. B



Viral diseases



Spring viremia of carp (S.V.P)


Fish management


Summer drying season


Gas bubbles disease


Ammonia toxicity


Asphyxia


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