White Covering on Fish

[denogginizer]

Excess mucous is from stress. Can we get a full tank picture and a list of tank mates?

5 Celestial Pearl Danios
3 Cory Cats
3 Mystery Snails
Bunch of Assassin Snails

Not my prettiest tank as it's more of a quarantine/experiment tank

 

[denogginizer]

The water seems fine and the clamped fin with white layer over the fish's back would suggest an external protozoan infection like Costia, Chilodonella or Trichodina.

Add 2 heaped tablespoons of rock salt for every 20 litres of water. Keep salt in there for 2-4 weeks. If there's no improvement after a couple of days with salt, you might need a chemical medication to treat external protozoan infections. But try salt first.

Sounds great. I'll do that. Thank you.

 

[itiwhetu]

More surface plants for these guys.

 

[HoldenOn]

More surface plants for these guys.

For sure. Some frogbit would work best. I'd also try and get some big swords.