1. Clownfish are all born as males, but when the age and get older they have the amazing ability to switch sexes .
2. When starting out a new aquarium, it is best to add hardier species at first. Once your aquarium ages a bit and gets settled, you can start to add more sensitive fish to the aquarium.
3. When you are picking out fish for your aquarium, you should always pick the best specimens available to put in your aquarium.