Two columbian sharks arrived with possible fintor don’t know what steps to take.

[Daviem]

Hi I’m new here and I’m having difficulty figuring out what to do, So two columbian sharks I purchased arrived yesterday they came from freshwater I slowly acclimated them to brackish water from the aquarium, I noticed slight white/cloudy areas on the back of their dorsal fins, today I noticed the area is bigger an more visible the place I purchased them from said maybe it’s slime or stress, I attached some photos what’s steps should I take does it look like finrot? Temps are 26c ph 7.8 near nil ammonia salinity 1.005 and they’re 2-3 inches long in a large aquarium.

 

[JuiceBox52]

Best way to treat fin rot is large daily water changes

 

[Colin_T]

There's no pictures.

It is probably excess mucous caused by handling and the stress of shipping. Keep the tank clean and they should be fine.

 

[Daviem]

Ok thank you