Specter Fish

Specter Fish (Korean: 가시고기, gasigogi) is an Epic Pet released alongside in the second half of The Living Deep Sea City update. It passively reduces Energy drain for the Cookie and summons spectral fish at certain intervals, destroying nearby obstacles and granting points.

Story
''Specter Fish roams the ocean depths, existing on a diet of pure darkness. Despite tirelessly feasting on the shadows its hunger remains unquenchable. One day while beckoning small spectral fish to gather the shadows of the deep sea, the Pet stumbled upon an unfathomable abyss. If only it could fill the depths with such profound darkness within its spines, perhaps its hunger would finally be appeased...''

Trivia

 * Specter Fish's internal name is "pet0225".