Trout's Mouth

... was the phrase we used in my family when anyone was visibly grumpy, on the grounds that a trout always looks miserable. So do most fish, in fact, and this one has good reason, as it has most of the things wrong with it that goldfish can develop: white spot, fin rot, and swim bladder issues. This is why it's in a quarantine tank in the main bedroom. 

Sadly it's not as unhappy as the fish I found dead in the pond this evening, for no obvious reason at all. It had no signs of disease or damage and only yesterday appeared happily feeding with the others. As a precaution I've cleaned out the pond and will order a new filter tomorrow. So only days after posting very contentedly about the delights of the pond I am reporting disaster.