[Why did my Cory die?]

Thanks ! 

[Why did my Cory die?]

Hello 

I have a community tank with seven corydoras, that I ve had for about 3 months with no issue. I have not added any new animals to the tank in about 1.5 months. 

Today at lunch, I saw a cory cat swimming in the surface, I isolated it in a 5gallon bucket with some water from the same tank and an air stone but it died a few minutes later.

It has something on its side.

Everyone in the tank is doing great.

Tank mates are tetras serpae, ruby tetras, neon tetras, cherry shrimp and a blue phantom pleco. 34 gallons 

Temperature constant 24 C ( no heater I live in the tropics )

Ph 7

Ammonia 0 

Planted tank 

[Black spot disease?]

Thanks, I'm going to give it a go! I do want to set up a hospital tank with out plants to use salt in.

I ve manage to take a better picture.

[Black spot disease?]

Hello fellow nerms,

I had some baby guppies in a 5 gallon bucket outdoors with snails and I have moved them to a heavily planted dirted 16 g tank indoors with some White clouds, snails and shrimp.

I have noticed that most of the guppies scratch against plants and one of them has a black spot in the middle of her body.

After a little reading, I'm thinking they may have black spot disease. Would you agree?

I sort of understand the life cycle of the flat worm that causes the black spot disease, so I was wondering if without the access to birds, can the flatworm be contagious to the other fish?

I have also read that the worms do little damage to the fish and is mainly a cosmetic issue, is that right?

I have read that prazil pro could be helpful, but I'm in Colombia and is super expensive and I can't afford it right now, how else could I treat it?

I Have also read that methylene blue can be helpful but can I use it with plants?

Everyone in the tanks looks fat and active

P.s

the guppies were born in my water.

I'm new to the hobby

Temp 27-25

Ph 6.8

Ammonia 0

(Don't have any more tests at the moment)  

Excuse the photo, they won't stay still!