-Animals (Kingdom Animalia)

-Molluscs (Phylum Mollusca)

-Gastropods (Class Gastropoda)

-Heterobranchs (Subclass Heterobranchia)

-Infraclass Euthyneura

-Subterclass Ringipleura

-Superorder Nudipleura

-Nudibranchs (Order Nudibranchia)

-Suborder Doridina

-Infraorder Doridoidei

-Superfamily Phyllidioidea

-Family Dendrodorididae

-Genus Doriopsilla

-Doriopsilla janaina

The Doriopsilla janaina is a small, brightly colored dorid nudibranch found in the tropical eastern Pacific, including coastal Mexico and Central America. Like other members of the genus Doriopsilla, it has a smooth, oval body with a soft, slightly flattened profile and a broad mantle that overhangs the foot. Its coloration is typically vivid yellow to orange, The rhinophores—paired sensory structures on the head—are club-shaped and often slightly darker or more opaque than the surrounding body, while the gill plume forms a delicate cluster toward the rear of the mantle. This species inhabits shallow rocky reefs and coral communities, usually on or near sponges, which form the primary component of its diet. Like many dorid nudibranchs, it likely sequesters chemical defenses from the sponges it consumes, making it distasteful to predators.