Anthias anthias - Swallowtail sea perch or Marine goldfish
We are on a rocky wall around 36/39 meters deep with steps that go up to 42 meters, this is one of the ideal habitats of Anthias anthias, the Swallowtail sea perch or Marine goldfish. This small fish belonging to the Serranidae grouper family is one of the most common and easy to find species at depths around 40 meters and which colors the seabed of the Mediterranean Sea with a beauty comparable to that of coral reefs. In fact, even the Mediterranean Sea has its coral reefs and as you can see from the movie, once the dark rock wall is illuminated, it transforms into a landscape of a thousand colors thanks to corals, sponges and its fish, including Anthias anthias. Anthias anthias Castagnola rossa Marine goldfish Serranidae intotheblue.it
Anthias anthias (Linnaeus, 1758), commonly known as red castagnola, is a marine bone fish belonging to the Serranidae family.
Distribution and habitat It is found in the Mediterranean Sea and in the eastern Atlantic Ocean from Portugal to Angola, there are also reports from northern Namibia. It is very common in the Mediterranean but rare in the Adriatic.
Its habitat is found in the circalittoral plane on coralligenous bottoms in shade and rich in cavities. It meets up to 200 meters deep, it starts to be common around 30 meters. It is a common inhabitant of the underwater caves. In the summer it can be found at relatively shallow depths, always in caves or dark ravines.
Description This little fish is quite different from the other Mediterranean serranids since it has a taller shape and compressed body on the sides, with a relatively small mouth. The eyes are large and the forehead slightly arched. The mouth is armed with small canine teeth. The dorsal fin is quite wide, in males the second and third spiny rays carry a laminar appendage similar to a flag. The caudal fin is strongly forked, the lower lobe is longer and pointed than the upper one.
The ventral fins are very elongated and much larger than the pectoral fins, in the male they are much more developed than in the female and usually have a yellow orange spot on the end. The scales are also present in the head region. The lateral line is very curved and runs along the profile of the back except in the caudal peduncle.
The livery is flashy: from purplish red to bright orange with three yellow stripes behind the eye, which is surrounded by a yellow and blue ring. The length reaches 27 cm, normally reaches 15 cm. Anthias anthias Castagnola rossa Marine goldfish Serranidae intotheblue.it