This is making them sound even more appealing. I get rather attached to mine, so long lived species are always fun for me. It looks like I will have to look into this species at one point. I'm glad to hear they seem to be doing so well in culture.My chaetas from hatchling to adult took about 9 months to mature for me but as adult they are still alive one year and three months. still laying ooths and hunting actively.. I wouldn't be surprised if their live span can last beyond two years if kept properly.