Folks:
I have over fifteen years of "aggressive" salt water experience. Over the course of those fifteen years I have made some pretty unwise decisions. Fortunately, I've learned from my mistakes. Now, there are some animals that I believe are better left in the ocean than the confines of a typical home aquarium.
The ethics of keeping sharks in the typical home aquarium has long been a topic of discussion here. Too many times, we hear from the enthusiastic rookie that wants to keep a leopard in a 55 gallon. More times than not, one of our more experienced folks will step up and say it can't/shouldn't be done. Clearly, this is in the best interest the prospective captives that would have no chance of thriving in those tiny confines.
Unfortunately, not all shark keeping scenarios are as clear cut as the leopard shark in the 55 gallon tank. Small nurse shark pups, for example, can adjust very well to captivity in a well maintained large aquarium (200 gallons +). Sadly, these guys are going to be able to live long in most home setups. I have owned a few nurse sharks over the years. Fortunately, I was able to find homes for each of them with folks that had larger systems. Some people are of the opinion that you shouldn't keep a shark unless you can maintain it in the same aquarium for it's entire life. Personally, I think that's a very responsible position to take. However, I'm not sure that we need to force that position on people who are clearly experienced shark keepers who have the means (a decent size tank with ample filtration) to maintain a small nurse shark. Experienced shark keepers are just that (rookies are a completely different story). They know when they purchase these guys that they are going to grow. They taken on that responsibility, so let's leave it at that. What do you folks think?