Baby turtles require special care in order to survive. Also, you should evaluate whether or not a baby turtle is the right type of pet for your lifestyle and for your family.
You can't just put a turtle in a fish tank and call it a day. Turtles require specific housing amenities to thrive. If you properly care for your little guy, he could survive for decades, so make sure that you provide your turtle with a comfortable and healthy home. If your pet doesn't receive the proper care, it could become ill, experience shell deformations, or die. In fact, the death rate for turtles is extremely high - partly due to the fact that people buy turtles without researching their proper care. Your turtle should not be allowed out of its cage or enclosure because of the bacteria that it could threaten your home with if it was allowed to roam free (plus, your turtle will only be a few inches long as a baby - although it could grow to be about a foot - so you want to make sure that it doesn't get lost or stepped on)! An aquarium will work fine. You should fill the cage with water so that the water level is taller than your turtle is wide. Use smooth rocks to create a "land" area in the aquarium as well. Your turtle should have equal land and water area in its home, or at least one-third basking area to two-thirds swimming space. Also, it is important that the air and the water are heated at about eighty-five degrees so that your turtle is not too cold to swim, and it can bask in warmth. Basking lights are available at most pet stores. As your turtle grows, so should your turtle's home. You want to provide your pet with the best possible quality of life, and since it will spend its whole life in its home, it should be your goal to make that home a very happy place!
Turtle foods are available at pet stores; however, this food should not be your turtle's only source of nutrition. You should complete the baby turtle's diet by providing him with some greens, earthworms, small fish, and fruit. You might notice that your pet has a preference for certain foods, so pay attention to uneaten foods left over after feedings. Feed your pet two or three times daily.
Your turtle's home should be kept clean at all times. You cannot leave uneaten food to spoil or you will wind up with a sick baby turtle. Clean, fresh water is also essential to your turtle's wellbeing. Rinse your turtle with warm water after you feed him so that he does not have remnants of food on him that could spoil. If you don't have a filtration system, then you should make daily cleaning of your turtle's aquarium a priority, and even with a filtration, you should at least clean out any droppings on a daily basis.
Find a local veterinarian who has solid experience with turtles so that your baby can get the best care possible.