Not sure if it was mentioned, but found a polygeminus grex henry on the exchange. 5k, so not buying it, but it's uncommon at least. The health regen is an hour long buff. Colour appears to be brown with a single cream stripe.
Thankyou for this guide, i am the tribble breeder for my fleet and have been passing out tribbles to the new members. They didnt take me seriously at first, but one of them started getting the rarer tribbles and now everyone is showing great interest.
The timing and odds of tribble breeding is still being researched; at the moment, it appears that a check is made when you change maps or zones. Tribbles placed in your bank with food seem to breed very quickly; this might be because Space Dock is actually multiple zone maps, and you are changing back and forth as you run errands, or to represent the "tribbles eat everything in storage" effect, or due to a bug.
While fighting on a ground mission for about 8 minutes, i had the inventory opened searching for a hypo.
I've seen them reproducing in the middle of the fight! I somehow i doubt they only "do" it while you zone
I would like to see the devs add alot more new "buff" tribbles, including more rares and super rares, and of course there must be an EPIC tribble out there somewhere! Tribble breeding is a curiously fun side hobby in-game and I think they have a winner if they can keep introducing new stuff from time to time, it' s kind of like an undocumented crafting profession.
So sign here if you want to see more tribbles, including uncommons, rares and epics! Hopefully some of those devs will see this post, as I'd hate to pester them with 'MOAR TRIBBLES" e-mails.