Well, you can't win them all. My 1998 four part article on keeping cuttles has lots of good information about food and tank mates but one big mistake that I thought I'd corrected. 40 gallons is way too small for a full sized adult common cuttlefish. 100 gallons is more like it. The juveniles can be kept in large groups but the adults need room. Multiple males in any size system can cause problems.
The common cuttlefish (S. officinalis) and Pharaoh cuttlefish (S. pharaonis) are more or less the same size. The biggest life history difference is the pharo likes it warm and has a life span about half as long as it's Mediterranean cousin.
As for Metasepia, those guys are much smaller and can be housed in a much smaller systems. We would all like to breed them. Waikiki Aquarium and the NRCC have tried and as far as I know still haven't had any luck.
James Wood
Bermuda Biological Station
The common cuttlefish (S. officinalis) and Pharaoh cuttlefish (S. pharaonis) are more or less the same size. The biggest life history difference is the pharo likes it warm and has a life span about half as long as it's Mediterranean cousin.
As for Metasepia, those guys are much smaller and can be housed in a much smaller systems. We would all like to breed them. Waikiki Aquarium and the NRCC have tried and as far as I know still haven't had any luck.
James Wood
Bermuda Biological Station