Baobao,
I would not say that brooklynella is rare in species other than clownfish, but it is certainly a common problem with clownfish.
I do not recommend freshwater dips or formalin dips for Cryptocaryon irritans (ich). Freshwater dips are ineffective, IMO, for this parasite and cause a lot of stress. Formalin dips are tricky because if formaldehyde is used improperly it can be lethal to the fish as well as dangerous to humans. Hyposalinity does not kill Cryptocaryon directly on the fish. It kills the tomont (not attached to the fish) or reproductive stage of the parasite before it can release a new generation to re-infect the fish.
I prefer formalin dips to freshwater dips for black ich and some other external parasites such as brooklynella. Despite formaldehyde being a poison, if it is used correctly, I think it is more effective and less stressful than a freshwater dip.
Amyloodinium is one of the few things that I would suggest using a freshwater dip for. FW dips are more effective, IMO, against Amyloodinium than against Cryptocaryon. A FW dip can give some relief to fish with Amyloodinium although it is not a cure.
Terry B
I would not say that brooklynella is rare in species other than clownfish, but it is certainly a common problem with clownfish.
I do not recommend freshwater dips or formalin dips for Cryptocaryon irritans (ich). Freshwater dips are ineffective, IMO, for this parasite and cause a lot of stress. Formalin dips are tricky because if formaldehyde is used improperly it can be lethal to the fish as well as dangerous to humans. Hyposalinity does not kill Cryptocaryon directly on the fish. It kills the tomont (not attached to the fish) or reproductive stage of the parasite before it can release a new generation to re-infect the fish.
I prefer formalin dips to freshwater dips for black ich and some other external parasites such as brooklynella. Despite formaldehyde being a poison, if it is used correctly, I think it is more effective and less stressful than a freshwater dip.
Amyloodinium is one of the few things that I would suggest using a freshwater dip for. FW dips are more effective, IMO, against Amyloodinium than against Cryptocaryon. A FW dip can give some relief to fish with Amyloodinium although it is not a cure.
Terry B