Spinning Tops
Candlesticks with a long upper shadow, long lower shadow and small real bodies are called spinning tops. The color of the real body is not very important.
The pattern indicates the indecision between the buyers and sellers

The small real body (whether hollow or filled) shows little movement from open to close, and the shadows indicate that both buyers and sellers were fighting but nobody could gain the upper hand.
Even though the session opened and closed with little change, prices moved significantly higher and lower in the meantime. Neither buyers nor sellers could gain the upper hand, and the result was a standoff.
If a spinning top forms during an uptrend, this usually means there aren’t many buyers left and a possible reversal in direction could occur.
If a spinning top forms during a downtrend, this usually means there aren’t many sellers left and a possible reversal in direction could occur.
Marubozu
Sounds like some kind of voodoo magic huh? "I will cast the evil spell of the Marubozu on you!" Fortunately, that's not what it means. Marubozu means there are no shadows from the bodies. Depending on whether the candlestick’s body is filled or hollow, the high and low are the same as it’s open or close. If you look at the picture below, there are two types of Marubozus.

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Upper shadows represent the session high and lower shadows the session low. Candlesticks with short shadows indicate that most of the trading action was confined near the open and close. Candlestick with long shadows show that traded extended well past the open and close.
Candlesticks with a long upper shadow and short lower shadow indicate the following: buyers dominated during the session, and bid prices higher. However, sellers later forced prices down from their highs, and the weak close created a long upper shadow. Conversely, candlesticks with long lower shadows and short upper shadows indicate the following: sellers dominated during the session and drove prices lower. However, buyers later resurfaced to bid prices higher by the end of the session and the strong close created a long lower shadow.
Other type of Candlesticks are with a long upper shadow, long lower shadow and small real body. They are called spinning tops. One long shadow represents a reversal of sorts; spinning tops represent indecision. The small real body (whether hollow or filled) shows little movement from open to close price, and the shadows indicate that both bulls and bears were active during the session. Even though the session opened and closed with little change, prices moved significantly higher and lower in the meantime.
After a long advance or long white candlestick, a spinning top indicates weakness among the bulls and a potential change or interruption in trend. After a long decline or long black candlestick, a spinning top indicates weakness among the bears and a potential change or interruption in trend.