If you are buying equipment for an experienced fish keeper, do you know what they like in the way of fish? For me, if someone were to try to gift me a tank and fish, I would really appreciate wild type goodeids with collection information. It would be unlikely that a newbie would be able to source such fish but I would appreciate the attempt. There are lots of fish that might make a good new interest for a 10 gallon for an established fish keeper but an awareness of that person's likes and dislikes would help a lot, along with a current list of the fish that they already have. A present of fish to a true hobbyist is probably a harder thing to do than a jewelry gift to a jewelry afficionado. I don't want to discourage you from doing this as it is something very persoanal and very much would be appreciated by a true hobbyist. It is just that the choices are very hard to make when you can't get inside the person's head. Can you help us help you with these choices?