I have some new species, but they all die before the age of 15. I have researched the fish environment a few times now and am almost at level 3, but they still keep dying on me. Does anyone have any suggestions?
Thanks!

-Shadowfire

Until you finish researching level 3 of Fish Environment, many fragile hybrids will not survive. You can (if you have enough money) keep them alive by using vitamins on them. Just make sure that none of the fishies that you want to treat are in the isolation tank when you use the vitamins, or they won't be helped.