Leopard Blenny

The Leopard Blenny (Exallias brevis) is a tropical marine fish that thrives in reef-associated environments. Typically found at depths ranging from 3 to 20 meters (approximately 10 to 66 feet), it generally prefers shallower waters from 3 to 8 meters (about 10 to 26 feet). This species can reach a maximum length of 14.5 centimeters (about 5.7 inches).

This fish is most commonly located on shallow reef tops, nestled among branching corals such as Acropora, Pocillopora, Seriatopora, Porites, and Millepora, where it feeds on coral tissues. The Leopard Blenny inhabits clear coastal reefs, especially in bays and semi-exposed areas, often residing at the seaward edge of the reefs. As a benthic species, it spends most of its life on the ocean floor.

The Leopard Blenny exhibits interesting reproductive behaviors. Males create nesting sites by overgrazing specific coral patches. The species is oviparous, meaning it lays eggs. These eggs are demersal, which means they sink and attach to the ocean substrate using a sticky pad. Once hatched, the larvae are planktonic, meaning they drift with ocean currents, often found in shallow coastal waters. Notably, the species engages in distinct pairing during reproduction.

The adult Leopard Blenny can be recognized by its characteristic 12 dorsal spines, 12 to 13 dorsal soft rays, 2 anal spines, and 14 to 15 anal soft rays. Its appearance includes numerous papillae on the upper lip and smaller, closely spaced spots, as well as between 30 to 36 nuchal cirri, which are small appendages on the back of its neck.

Found throughout the Indo-Pacific region, its range extends from the 🌊 Red Sea and Sodwana Bay in 🇿🇦 South Africa to the Hawaiian, Marquesan, and Society Islands (🇵🇫 French Polynesia), reaching northward to the Ryukyu and Bonin islands and southward to 🇳🇨 New Caledonia (🇫🇷 Overseas France) and Rapa.

The genus name "Exallias" is derived from the Greek word meaning strange or marvelous, reflecting the unique and fascinating nature of this species.