Fish problem please help

Amm = o
Nitrite = 0
Nitrate = 20
Temp just turned to 29C

Please help lost a neon and danio already. Overnight they passed away and could not pick up the problem. just saw this today [pic]. Please help.

Its a white spot on his lip. Cant see it on anyone else.

 

Is it fuzzy? The pictures are hard to see since danios are so quick. Can you post a video? It might be mouth fungus

 

Yes its fuzzy, just noticed fuzziness on one of the side fins of a cory too

 

seprate it from tank NOWWW

 

Fuzzy spots on mouth and gills are usually associated with fungal infections caused by bacteria. I would also separate infected fish and try to treat. When it's on the mouth I've seen it spread to the gills in just a few short days, and then no more fish.

 

Hello Izak...

Most, if not all tank problems have to do with poor water conditions. Large, frequent water changes are the simplest way to keep the tank water healthy for your fish. Small tanks up to 30 gallons should get a 50 percent change at least every few days. Tanks larger than this need 50 percent changes weekly. This routines guarantees stable and clean conditions for whatever lives it.

Tank keeping is pretty simple, the more water you change and the more often you change it, the healthier the tank.

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