Hopefully, I'll keep them until they die, which will hopefully be a while :) We are doing some experiments on diet/growth and if we get them to spawn try to do some larval rearing. The largest one is about 9 lbs and has an arm-span of about 4 feet. I'd like to try to do long term experiments focusing on larval rearing and artificial diets.
They have not seemed to be too aggressive with one another, but they are in a big tank 15ft in diameter. We are planning to put them into individual tanks for the experiments. There is not a lot of info on this species in captivity but from what I've read as long as you keep them at low densities and provide them with hiding places they can be kept together, but males can become more aggressive once mature.
I generally do not name my animals, maybe because I care for thousands of animals and it's hard to remember their name's :)
The first project is for a marine science student for her senior thesis. We will be comparing growth between a shrimp diet (control) vs chicken and squid. As far as I know one one has gotten positive growth on just a fish diet. After this experiment is done I will try other protein sources and if I can find one that is cheep I can start working on producing an artificial diet. Although, my main interest currently is completing the life cycle.
We might try to see if we can measure stress/health in the animals. I don't know if it will work but the student wanted to try, so we will see what happens.