\jellyfish\artic-fox\squid \wolf f \left ( \varphi \right ) = \frac { 4 } { 9 } \frac { \left ( 4 - 3 \gamma \right ) } { \gamma ^ { 2 } } \frac { 1 } { \left ( \varphi - \varphi _ * \right ) ^ { 2 } } .