The little ram will ram the bigger colorful one, nipp at the longer fins even seems as if its swim fin (the ones near the Gils) are hurt now both fish are alive and still swimming around regularly. But I think the little one they sexed as female maybe is male. Should I take one back to the fish store nd hope they have one with a for sure pink belly and small fins. Would these two I have kill eachother or stress eachother to death?!