Dead Gudgeon

[ruperthennen]

Hello, this is my very first post. I have a 70L tank with 6 mountain minnows, 2 dace and 2 gudgeon. Last night I found one of my gudgeon dead. This morning I found the other one dieing. All other fish are fine. I tested the water and all seems to be OK. Does anyone know why only my gudgeon are dieing? Please help!

 

[Mumma.of.two]

Hi, welcome to AA!
What are the exact results of the tests? Did they show any signs of distress? How olds the tank? How long did you have them?

 

[ruperthennen]

Hi, The test reults showed ok on all the rows (all the colours showed that the water is safe and doesn't need a water change). They didn't show any signs of distress - they seemed happy to me! They were eating fine and were as active a Gudgeon can be. The tank is 6 weeks old. They were the most recent addition to the tank and had been in the tank for 2 weeks.