# Shark Back & Shark Tail {% hint style="success" %} Learn the basics of [Harmonic Patterns](https://docs.algoboxpro.com/fundamentals/harmonic-patterns). {% endhint %} AlgoBox™ Shark Back and Shark Tail strategies are Harmonic Patterns based on Fibonacci retracements, extensions and projections of price structure, which can indicate a Potential Reversal Zone (PRZ).

AlgoBox™ automatically, instantly and continually plots harmonic patterns so you don't have to, saving you time and mental capital.

## Shark Back

The rectangular boxes are the PRZ or "Potential Reversal Zone" for each Harmonic Pattern. The "farthest" line inside the PRZ indicates the optimal entry location for a Shark Back setup:

An example of a red Shark Back (bearish). Price touches the optimal entry line, pivots and drops.

## Shark Tail A Shark Tail setup is a multi-confluence strategy that consists of a Shark harmonic with one of the following appearing behind the PRZ:
* [FlowMaster™ Alpha Omega](https://docs.algoboxpro.com/fundamentals/flowmaster-tm-alpha-omega) * [FlowMaster™ Enigma](https://docs.algoboxpro.com/fundamentals/flowmaster-tm-enigma) * [FlowMaster™ Cross](https://docs.algoboxpro.com/fundamentals/flowmaster-tm-cross) * [FibElliDott](https://docs.algoboxpro.com/fundamentals/fibellidott)

An example of a green Shark Back with a Flowmaster™ Cross appearing behind the Shark PRZ, making this a Shark Tail setup.

An ideal entry would be as soon as possible after a FibDot or Cross appears.

An example of a green Shark harmonic with a FlowMaster™ Alpha appearing behind the Shark PRZ, making this a Power Shark Tail.

Utilize AlgoBox™ ATM strategies to assist in automatically placing stops and targets according to your desired parameters.

An example of a green Shark harmonic with a 🟢 green FibElliDott, making this a bullish Shark Tail.

{% hint style="info" %} Reminder: We generally use [4 types of stops](https://docs.algoboxpro.com/essential-tips-and-techniques/4-types-of-stop-losses): Dot, Cross, Box, & Triangle. {% endhint %}

An example of a red Shark harmonic with a FlowMaster™ Omega appearing behind the PRZ, making this a bearish Shark Tail.

Ideal stop losses for Shark Backs are behind the PRZ box.

Another example of a bearish Shark Tail. A Shark harmonic with a Flowmaster™ Cross appearing just behind the PRZ.

Ideal stop losses for Shark Tails are behind the Cross or Dot.

An example of a red Shark harmonic with a 🔴 bright red FibElliDott appearing just behind the PRZ box, making this a bearish Shark Tail.

Sharks are statistically the most powerful harmonic pattern, but just like any other trading signal, they are not 100% accurate 100% of the time. "Trade Nothing Alone"

HMD: A green Shark harmonic gets pierced, then a 🔴 bright red FibElliDott appears, hinting at continuation to the downside.

{% hint style="info" %} Break: When price continues through the back of a harmonic pattern's PRZ, it is considered a break of the harmonic structure. {% endhint %}

An example of a red Shark harmonic with a 🟢 dark green FibElliDott signaling continuation to the upside.

An example of a bearish Shark Tail. A Shark harmonic with a red FlowMaster™ Enigma appearing just behind the PRZ.

Another example of a bullish Shark Tail. A Shark harmonic with a green FlowMaster™ Enigma appearing just behind the PRZ.

The Shark Tail strategy combines market structure geometry with Real Time Order Flow Analysis (RTOFA), making it a powerful addition to your trading analysis. *** ## Shark Back & Shark Tail Examples

STUDY: On the AlgoBars 3 chart of YM futures, a Shark PRZ appears at King Timing and then a 🔴 red FibDot appears to complete the Shark Tail strategy for a swift move down.

WATCH: On the AlgoBars 1 chart of YM futures, a green Shark Harmonic appears at King Timing - targets filled as a Delta Shift occurs.

*** ## Video Tutorials: Shark Back & Shark Tail {% embed url="" %} WATCH: This concise video explains the Shark Back and Shark Tail strategies and their differences in detail. {% endembed %} {% embed url="" %} WATCH: Vinny E. Mini teaches the Shark Back and Shark Tail strategies in this video tutorial. {% endembed %} *** Only available on AlgoBox™ for NinjaTrader 8. [Try AlgoBox™ for free today.](https://www.algoboxpro.com/start-trial) [**Disclaimer**](https://docs.algoboxpro.com/links/disclaimer)