Hey there: I have D. Imitators. Going on 1.3 years. I love, love, love them! I got a trio from Tor Limbo and did only a month of research before getting them and have never regretted it!!! Set up is 33 gal vertical, CF lights, CPU fan both on timer. Temp range(summer 74-79), winter(72-76). Auto sprayer 3 times a day. People had told me about how sensitive they were, how shy they were. I bever experienced either!!! Mine are hardier then my Colbalt TIncs!! They lay eggs constantly and I recently found a perfectly morphed juv. Easiest as heck to feed since they will take larger prey then other thumnails-they even eat the full size Hedei!! Only down fall-because they are small, they are harder to find in the tank when hiding, and impossible to catch in a well planted tank!!!! And you'd better have the right tank(one that is completely ff proof!)because they can squeeze through the tiniest of cracks!! They have given me a wonderful first experience with Darts and bolstered my confidence in the continuing on in the hobby!! who will you be getting yours from??
Maggie