Carbohydrate excess in diet

Symptoms

Poor food conversion ratios
The growth when compared to normal food conversion ratios is below normal.

Abdomen swollen
Lower body of fish is bloated and swollen to a considerable degree.

Dark body colouration
The colours of the fish are darkened beyond their normal shade.

Growth robust, well muscled
Fish shows good growth with muscles, etc. normal.

Hanging at surface
Fish stays at water surface all the time.

Listless and lethargic
Fish moves very lazily in water, much less than normal, lacks interest.

Reluctant to feed
Fish comes to eat but with evident lack of appetite.

Excessive amounts of carbohydrates in fish diet.

Amend food mixture to obtain a better balance of components and the problem will disappear.

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Rare these days, if suspected get a detailed assay of the feed, and have it evaluated by an expert, for amount and type of carbohydrates in feed.