only if the water is in the mid 30s F. Is the fish moving? Acting abnormal? Doesn't swim with the rest of the herd? How are the other fish doing? A lone fish, bottom sitting by itself, indicates a problem. All the fish doing this (NOT with low water temps) indicates the wole pond is affected by either disease or parasite or even water conditons, though ususally they'll dart, dash, gasp at the surface, or float listelessy for the latter.Fish on the bottom can it be because the water is getting colder
Not to side track the thread but I see that behavior with fish with floating issues.I have one small fish that sits in the same spot most of the time. It's not on the bottom, but on one of the shelves about 10 inches deep. He/she is almost always there.
I think it's just his favorite spot.
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