I should probably start a thread in Bible Discussion about this, because it's very important.
When secularhermit asked if my fish were engaged, I realized that they've been cohabiting for seven years without being married. But I don't know if they're male or female! And so here's the dilemma. I can either declare them married, and therefore risk performing a same-sex marriage ceremony, or leave them as they are. The odds of them being the same gender are 50/50.
What's more sinful, a gay goldfish marriage, or a male and female goldfish living together who aren't married? :O
And then there was the time we had a guest speaker and the little girl in church requested prayer for her guinea pigs because the one was pregnant and the parents were brother and sister and she didn't want the babies to have any problems. Guest pastor prayed a powerful prayer for healing and God's restoration for the emotional damage suffered from this incestuous relationship. All I really remember is how hard it was to keep from bursting out laughing in the middle of that prayer.
More to the point. If they've been together for seven years and there have been no little ones, I don't think they are engaging in any sinful behavior. They must just be tank mates/ bowl mates .

