Brooklynella, Velvet or other??

Marizard

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I have had a case of what I think was brooklynella in the past 5 months. It started with my clownfish and they ended up dying despite our medication.

We got a second batch of fish 4/5 weeks as per recommended by our fish guy, and they ended up dying of the disease too. We weren't able to treat the fish with formaldeheyde since it's illegal in my country, so we tried metro and green malachite. They lost all spots in a month and ended up dying a few weeks after during the night all of a sudden.

We left our main tank fishless for 7 weeks.

My sister decided to buy a Midas Blenny three days ago, and I was scounting for diseases when I noticed a white spot in one of his fins. It looks to me like he caught the disease too.

I thought maybe we ended up diagnosing the fish badly, since we never got to show them to a specialist and maybe this is velvet and not brook.

Can someone help please? I'm desperate, I don't want to lose a fish again.

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Brooklynella kills fish within a few days. The best treatment is Malachite Green or Copper Sulphate. Both cause problems to fish and inverts. I prefer copper because it's safer but you need to remove the inverts from the tank and do a couple of complete water changes before putting inverts back in the tank.

White spot will kill fish within 2 weeks of noticing the white spots. You can treat white spot with Malachite Green, Copper Sulphate, or just raising the water temperature to 30C (86F) and keeping it there for 2 weeks, or at least 1 week after all the spots have gone. The heat kills the parasites and you don't need chemicals. Just increase aeration to maximise the oxygen levels in the water.

The blenny in the picture does not have white spot or Brooklynella. It just looks like a calcium deposit in the fin.

If your fish are getting sick, there is either a water quality problem in the tank, or the fish are sick at the shop before you get them.
 
Brooklynella kills fish within a few days. The best treatment is Malachite Green or Copper Sulphate. Both cause problems to fish and inverts. I prefer copper because it's safer but you need to remove the inverts from the tank and do a couple of complete water changes before putting inverts back in the tank.

White spot will kill fish within 2 weeks of noticing the white spots. You can treat white spot with Malachite Green, Copper Sulphate, or just raising the water temperature to 30C (86F) and keeping it there for 2 weeks, or at least 1 week after all the spots have gone. The heat kills the parasites and you don't need chemicals. Just increase aeration to maximise the oxygen levels in the water.

The blenny in the picture does not have white spot or Brooklynella. It just looks like a calcium deposit in the fin.

If your fish are getting sick, there is either a water quality problem in the tank, or the fish are sick at the shop before you get them.
I had a case with my previous fish that he had one white spot in one of his fins and the next day there was a hole.
I'm concerned this might happen to this fish too. I sent my water to be tested by a fish shopkeeper and I'm still waiting for the results but I will post them as soon as I have them.

In the meantime, is there any type of disease that corresponds to this big white spot on his fin? He still has the spot after 3 days

Here is a video to help identify
 
In the meantime, is there any type of disease that corresponds to this big white spot on his fin? He still has the spot after 3 days
calcium deposit, excess mucous or fungus

fungus is normally white and fluffy and infects damaged tissue. it is uncommon in marine tanks

excess mucous is produced by the fish to cover a sore or wound.

calcium deposits occur in the fin rays and make it look fatter.
 

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