GAS BUBBLE DISEASE OF CATFISH

Bloated fishes

Fishes are cold-blooded creatures, meaning their body temperature depends on the temperature of their environment. The water they live in and their bloodstreams can become supersaturated with gases when there is a sudden rise in water temperature or a sudden rise in pressure.
Gas bubble disease (GBD) is caused by oxygen saturation in the water resulting to increase in algal photosynthesis. It is also occurs when the fish bloodstream gets occupied with gases and this causes discomfort in the fish. Small bubbles accumulate in the fish intestines, skin, and filaments which causes the fish to bloat.
Cranial swelling and bulging of the eye
can also occur. Larvae and fry exhibit hyperinflation of the swim bladder
and eggs float to the surface.
Mortality can reach 50 - 100 % due to acute gas bubble trauma. In
shallow aquaculture ponds, fish cannot escape to deeper waters where
gas supersaturation is less likely to occur. The onset of GBD is rapid and
requires a fast-response instrument for monitoring that is also reliable

Treatments
1. Stop feeding the fish.
2. Strip pond of excess gases by fixing pond water.
3. Ensure that inlet hose for pond water is not beneath pond water level.
4. Use minimal but adequate feed per time.
You could simply take the fish out of the pond and place it in another pond that has the correct oxygen saturation level.

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