Trapania tigger is a species of sea slug, a nudibranch, a shell-less marine gastropod mollusk in the family Goniodorididae.
Description and Characteristics
Trapania tigger is a small nudibranch, typically reaching a maximum size of 10 mm. Its body is characterized by a distinctive orange-yellow color with black speckles, resembling the markings of a tiger. The rhinophores, which are sensory organs located on the head, are short and club-shaped. The cerata, which are finger-like projections along the back, are also orange-yellow with black tips. These cerata serve as defensive mechanisms, containing nematocysts, which are stinging cells, acquired from the prey.
Habitat and Occurrence
Trapania tigger is a widespread nudibranch species, found in the tropical waters of the Indo-Pacific region. Its distribution includes the Red Sea, the Indian Ocean, and the Western Pacific Ocean. The species typically inhabits shallow reef areas, often found among corals, sponges, and algae, making it a prevalent presence in these aquatic ecosystems. Its depth range is typically between 5 and 20 meters, falling within the mesophotic zone.
Taxonomy
Trapania tigger belongs to the family Goniodorididae, which is part of the order Nudibranchia and class Gastropoda. This classification places Trapania tigger within a diverse group of marine gastropods known for their bright colors and lack of shells.
Feeding
Trapania tigger is a carnivore and feeds primarily on hydroids, which are small, colonial invertebrates. The nudibranch uses its radula, a tongue-like structure with rows of teeth, to scrape the hydroids from the substrate. The nematocysts from the hydroids are ingested by Trapania tigger and incorporated into its own defensive system, providing a protective mechanism.
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