Do any of the experts know what the lifespan of wolfish are, specifically aimara? I have read that they can be long living, over 15 years, but I do not know of any specific cases. The longest kept wolf fish I know of was FC3 that had his for 9 years and acquired it at 12 inches so I guess we can assume it was around 10 years old. Most of my time in the hobby was with piranha and while most people did not keep their piranhas long term, there are a number of folks that kept them 15+ years with me finding some folks that had specimens for more than 30 years.