Plain Rockskipper

Istiblennius unicolor, commonly known as the pallid rockskipper, is a small fish species endemic to the coral reefs of the 🌊 Red Sea, which is part of the western 🌊 Indian Ocean. This species belongs to the combtooth blenny family. Males of the pallid rockskipper can grow up to 10.2 cm (4.0 inches), while females reach a slightly smaller size of up to 9.2 cm (3.6 inches).

These blennies prefer tropical, marine environments and are usually found close to the ocean floor. They have a unique adaptation that allows them to breathe air when necessary. The dorsal fin of the pallid rockskipper has 13 spines and 17 to 18 soft rays, while the anal fin is equipped with 2 spines and 17 to 19 soft rays.

Though not much is known about the specific habits or habitat preferences of Istiblennius unicolor, they are part of a family known for their reproductive pattern. They are oviparous, meaning they lay eggs, which they attach to the seafloor using a sticky pad. These eggs are held in place by filamentous structures. Once hatched, the larvae live as plankton, primarily found in shallow coastal waters.

The species is localized to the 🌊 Red Sea, specifically ranging from the northern Gulf of Aqaba to the southern Dahlak Archipelago. The name "Istiblennius" comes from the Greek words "istios," meaning sail, and "blennios," meaning mucus, reflecting perhaps an aspect of their appearance or nature.