Eren's spirit beast was a blue-scaled fish.
It was a distinctive blue-scaled fish that resembled a salmon, except for its horned head and large size.
Measuring approximately a meter in length, the fish possessed a dainty physique and exuded an alluring aura when motionless. Its movements in the water were graceful and captivating to observe.
The fish appeared to possess a body made of mana, yet its mana signatures resembled those of a living organism. One could only define it as a conscious fragment of the world's will.
The spirit beast would seek the Red Fire generated by the Red Fire Sardines before devouring it as if it was the most delicious fish food. Of course, the spirit beast didn't hurt the Red Fire Sardines while devouring their flames.
