How about an update from the others who had these last fall?
I didn't get them last fall, but got a couple 5-fish orders this winter. I've been losing them one by one, but cannot know if it's because I have a tube anemone, or because I've got an open top tank, or something else. Or maybe it's because I only feed 3 times a day. Hard to say.
I do know I've never seen one on the floor.
My first lot of 5 had a DOA, so I really started with 4. They all ate heartily. But after a couple of weeks, one began hanging out away from the shoal - alone in a corner. And a few days later there were only 3.
I got another set of 5, who all arrived alive and ate well. The shoal of 8 looked awesome. But after a couple of weeks, it was 7. And that has kept up... every few weeks one less. Now I'm down to 3.
A couple of additional times I've noticed the "hanging by myself" behavior before losing one. And I've also observed clamping their caudal "tail" fin. One of the 3 I have now is clamping that fin. Whenever I lose one, I always expect to see them all with normal tail fins - assuming that the clamped fin fish died. But there always seems to be one like that. Not sure what that is about.
Until a week ago, the only other fish in the tank were a neon goby, a yellow striped cardinal fish, and a clown goby. So I don't think it's a problem with other fish. As for the tube anemone, I hasn't eaten my other fish. And they've been there longer. So I'm finding it a little tough to believe that only the redspot's get nabbed by it.
And I don't think it's the open top either. It's possible to lose a fish - maybe even two - to the carpet and not find a dead fish on the floor. But not 6. No way.
It could be that three feedings is insufficient. I know more is better. But more is not practical for me. So if anyone KNOWS that more is ESSENTIAL, please speak up.
So I'm at a loss. I've never been so unsuccessful with a given type of fish. And will not be getting any more until - and unless - I can with complete certainty figure out what is wrong.
