I've had several of these in the past but due to their slender bodies most have met their end down the throats of various catfish I've kept. Some that I've kept retained darker pigmentation while others have taken on a lighter, speckled appearance as they grew. Sometimes it has been hard to tell what species I've had as almost all of them are sold in my area as "red tail barracuda". I definitely love these guys and their relatives. So fast, so sneaky, and capable of eating things much bigger than you think they could.