Whats Killing My Danios

[james512]

hi there.
i found one of my danios dead in the tank two days ago. it had not shown any signs of disease etc. and today i found another danio looking very lethargic and looking very sick.(fins damaged and large pink section of body) i have done some water tests and everything seemed fine. the only reading worth noting was a reading of 20 under nitrates. its tanks mates are a dwarf gourami 3 other danios and 4 neon tetra. please help me save my remaining fish.

 

[CheniseMummy]

How long have you had them it look a little thin? my danios always has plump bellies. they gave me lots trouble and died for no reason i could ever find out. Hope you do save the rest. sorry couldnt help more but someone else hopefully can.

 

[hillmar77]

Looks like a bacterial infection from the picture. You could try anti-bacterial food and see if that helps.

 

[dipsydoodlenoodle]

To me it looks a bit like fin rot (extended to body rot). Clean water and possibly some medication will help.