Latin name: Other names: Pathogen: Symptoms:
Fish lie at the bottom of the tank with mouths wide open and spread their fins and gill covers,
Fish move in violent rushes,
High sensitivity to mechanical irritants,
Initially fish show increased sensitivity to mechanical irritants. Then convulsions begin (jerky movements, trembling fins), fish lose equilibrium, lie at the bottom of the tank with mouths wide open and spread their fins and gill arches.
The build-up of organic matter in the aquarium and filter, its decomposition, and the formation of ammonia nitrates.
How to cure:
Perform a partial water change, siphon the gravel, and rinse the filter. You can add water conditioners that neutralize ammonia and nitrates.