im playing version 1.01 i think, and they live pretty well, they also sell for 90 gold if i increase the price (and i dont even have to wait longer for them to sell)

now that ive made about 2000 cash off of em, im researching environment, and have the second tank...

its weird, sometimes the babies die when they come from the two identical parents, and sometimes not.. but they never die when its 2 species making it...

Edit: oh and im on medium difficulty