I give you....
A plastic dinosaur.
Oh, and a beta fish. The teenage girls at the pet store said he'd live, "Like, a totally long time!"
I put the plastic dinosaur in because I felt sorry for the poor lonely fish. Also, they kind of look alike. Except one has legs. And sharp teeth. And lungs. You know what, nevermind that. The point is that they will put aside their differences and form a close, lasting bond of friendship.
Betasaurus Rawr vs. Stegasaurus
I picked the name. Betasaurus Rex didn't sound right. Betasaurus Rawr, though, has a nice ring to it.