I think Greg is saying that this animal was having trouble with not being able to get off the bottom of the tank (ie. it was permanently sunk, not permanently floating).
I have tried weighting animals that floated due to shipping and handling problems, but I found that once the weights were removed the animals floated again. Sometimes they regained neutral buoyancy over several months, sometimes not.
How does feeding chicken help to generate cameral fluid? Like Greg, I prefer to feed nautiluses marine fish and shrimp. I have heard of chicken being used as bait for cage traps, but I don't see how it would help here, except maybe to weigh the animal down temporarily with a full crop of food.
if the Nautilus no longer can move down ward due to the lack of fluid in the chambers
. Wouldn't this make the animal float? Perhaps I am just confused by what you mean. Can you explain in more detail how this all fits together. I encounter animals that float quite often, and I am curious to how the suggestions you make would work.
Thanks.
Robyn.