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Little black spots on fish

bianca_m35

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He wasn't doing to good so I had to euthanize him. Any idea what they may be?
 

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What are your ammonia levels? Do any other fish look like this?
0 I tested it cause I thought that could be the issue.

I had an ammonia issue a little while back but I didn't have the cardinal tetras then. I got these guys about a month ago. He was also the smallest of the bunch. The other fish are extremely healthy. Very confused. None have spots and all really bright in color and active
 
Pictures of the other fish?

The one that died might have had parasites it picked up in Asia and that is why it is skinny and emaciated. These types of parasite are usually from terrestrial animals and are not normally infectious to other fish. However, monitor the remaining fish and if any show symptoms, then post pictures immediately.
 
Pictures of the other fish?

The one that died might have had parasites it picked up in Asia and that is why it is skinny and emaciated. These types of parasite are usually from terrestrial animals and are not normally infectious to other fish. However, monitor the remaining fish and if any show symptoms, then post pictures immediately.
Rainbow shark dead. Although he hasn't been doing too good for awhile. All other fish are perfectly fine.
 

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That's a cool looking orange pleco, what type is it?

The cardinal tetra in the following link has a damaged anal (bottom) fin. Is anyone picking on it?

The cardinal tetra on the left of this picture is looking very skinny.

The bronze Corydoras in the following picture has 3 cream coloured dots/ marks on its side. Is that on the fish or is it water marks on the glass?
If it's on the fish, then it's excess mucous and might be from external protozoan parasites.

------------------
The skinny tetra and the original one that died in the first post, and the rainbow shark all have similar symptoms, wasting away. This could be intestinal worms, gill flukes or another parasite they picked up in Asia.

I would try deworming the fish and see if that helps. Section 3 of the following link has information about treating fish for intestinal worms.
If you can get Flubendazole, then use that because it treats more types of worms. If you can't get Flubendazole, then Levamisole would be the next choice and after that, use Praziquantel. But Flubendazole will do the same job as Levamisole and Praziquantel combined.
 
That's a cool looking orange pleco, what type is it?

The cardinal tetra in the following link has a damaged anal (bottom) fin. Is anyone picking on it?

The cardinal tetra on the left of this picture is looking very skinny.

The bronze Corydoras in the following picture has 3 cream coloured dots/ marks on its side. Is that on the fish or is it water marks on the glass?
If it's on the fish, then it's excess mucous and might be from external protozoan parasites.

------------------
The skinny tetra and the original one that died in the first post, and the rainbow shark all have similar symptoms, wasting away. This could be intestinal worms, gill flukes or another parasite they picked up in Asia.

I would try deworming the fish and see if that helps. Section 3 of the following link has information about treating fish for intestinal worms.
If you can get Flubendazole, then use that because it treats more types of worms. If you can't get Flubendazole, then Levamisole would be the next choice and after that, use Praziquantel. But Flubendazole will do the same job as Levamisole and Praziquantel combined.
The tetra that died also had damaged fins. Don't see any nipping so not sure.

For the cory raise are just water marks on the glass.

Yes they're VERY skinny some of them. Okay I will look for sure. Thank you. :)
 
That's a cool looking orange pleco, what type is it?

The cardinal tetra in the following link has a damaged anal (bottom) fin. Is anyone picking on it?

The cardinal tetra on the left of this picture is looking very skinny.

The bronze Corydoras in the following picture has 3 cream coloured dots/ marks on its side. Is that on the fish or is it water marks on the glass?
If it's on the fish, then it's excess mucous and might be from external protozoan parasites.

------------------
The skinny tetra and the original one that died in the first post, and the rainbow shark all have similar symptoms, wasting away. This could be intestinal worms, gill flukes or another parasite they picked up in Asia.

I would try deworming the fish and see if that helps. Section 3 of the following link has information about treating fish for intestinal worms.
If you can get Flubendazole, then use that because it treats more types of worms. If you can't get Flubendazole, then Levamisole would be the next choice and after that, use Praziquantel. But Flubendazole will do the same job as Levamisole and Praziquantel combined.
Also the orange pleco is a red bristlenose female! Was hoping for a male lol. Had 2 females but one died during my ammonia spikes. I lost 20 fish :( and also I think the fish have the 2nd illness on that link you provided. They have every symptom but I'm not noticing any white poop but I also don't sit by there all day. Ugh it's for sure from those tetras 🤦🏽‍♀️
 
That's a cool looking orange pleco, what type is it?

The cardinal tetra in the following link has a damaged anal (bottom) fin. Is anyone picking on it?

The cardinal tetra on the left of this picture is looking very skinny.

The bronze Corydoras in the following picture has 3 cream coloured dots/ marks on its side. Is that on the fish or is it water marks on the glass?
If it's on the fish, then it's excess mucous and might be from external protozoan parasites.

------------------
The skinny tetra and the original one that died in the first post, and the rainbow shark all have similar symptoms, wasting away. This could be intestinal worms, gill flukes or another parasite they picked up in Asia.

I would try deworming the fish and see if that helps. Section 3 of the following link has information about treating fish for intestinal worms.
If you can get Flubendazole, then use that because it treats more types of worms. If you can't get Flubendazole, then Levamisole would be the next choice and after that, use Praziquantel. But Flubendazole will do the same job as Levamisole and Praziquantel combined.
https://www.amazon.com/dp/B085TQ75Z5/?tag=ff0d01-20

Is this good?
 
That should be fine. It's main ingredient is Flubendazole so it should take out virtually all types of intestinal worms, gill flukes and other types of worm in or on the fish.

It does kill snails and shrimp so remove those if you want to keep them.

--------------------
Before you treat the tank, do the following things.

Work out the volume of water in the tank:
measure length x width x height in cm.
divide by 1000.
= volume in litres.

If you have big rocks or driftwood in the tank, remove these before measuring the height of the water level so you get a more accurate water volume.

When you measure the height, measure from the top of the substrate to the top of the water level.
You can use a permanent marker to draw a line on the tank at the water level and put down how many litres are in the tank at that level.

There is a calculator/ converter in the "FishForum.net Calculator" under "Useful Links" at the bottom of this page that will let you convert litres to gallons if you need it.

Remove carbon from the filter before treating or it will adsorb the medication and stop it working.

Wipe the inside of the glass down with a clean fish sponge. This removes the biofilm on the glass and the biofilm will contain lots of harmful bacteria, fungus, protozoans and various other microscopic life forms.

Do a 75% water change and gravel clean the substrate. The water change and gravel cleaning will reduce the number of disease organisms in the water and provide a cleaner environment for the fish to recover in. It also removes a lot of the gunk and this means any medication can work on treating the fish instead of being wasted killing the pathogens in the gunk.
Make sure any new water is free of chlorine/ chloramine before it is added to the tank.

Clean the filter if it hasn't been done in the last 2 weeks. However, if the filter is less than 6 weeks old, do not clean it. Wash the filter materials/ media in a bucket of tank water and re-use them. Tip the bucket of dirty water on the garden/ lawn. Cleaning the filter means less gunk and cleaner water with fewer pathogens.

Increase surface turbulence/ aeration when using salt or medications because they reduce the dissolved oxygen in the water.
 

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