swmmnglessons
Aquarium Advice Regular
I have two separate tanks with zebra danios (one of many breeds) and a couple in both tanks are a little deformed looking. It seems to come and go and they don't seem to be affected by it. The head looks normal and then their middle region dips way down and then the tail is in the normal position. It almost seems to be some digestive thing or something to do with constipation but the books don't mention anything like it. Some of them will rest on the bottom of the tank to the point that you think they're dying but they never do. Has anyone else had this problem and can anyone tell me what it is? I have had such a problem with this batch of eight that I got a few months ago. Half the time they all look like they have severe dropsy but nothing ever comes of it. I'm stumped...