Here are photos of both Gajeel and Natsu when they were still in their cups on my desk.
Obviously (since I'm a good owner) they now inhabit a 40 gallon tank with other fishies, frogs, crabs, snails and plants.
I did not take pictures of my two female betas (forgot) but I hope they don't choose the wrong males and mess up the pairings!! XD So I was thinking Natsu/Lucy and Gajeel/Levy... but I cannot mess with the free wills of my fishes, though so they have to work that out amongst themselves.
Here we have Gajeel: