saltwater, reef fish
Annular seabream
Diplodus annularis
Oval and laterally compressed body shape, typical of the sparid family. It features a silvery-grey coloration with faint yellowish longitudinal stripes along the flanks. A very distinct dark, saddle-like spot encircled by a white margin is present on the upper caudal peduncle.…
- Habitat
- Inhabits marine and brackish waters, commonly found over…
- Size & weight
- Typically ranges from 12 to 20 centimeters in length, wi…
- Diet
- Omnivorous, feeding primarily on small benthic invertebr…
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Physical characteristics
Oval and laterally compressed body shape, typical of the sparid family. It features a silvery-grey coloration with faint yellowish longitudinal stripes along the flanks. A very distinct dark, saddle-like spot encircled by a white margin is present on the upper caudal peduncle. It has large eyes, a moderately steep head profile, and a single continuous dorsal fin with spiny anterior rays. Scales are ctenoid and moderately sized.
Habitat & distribution
Inhabits marine and brackish waters, commonly found over rocky bottoms, seagrass meadows (Posidonia oceanica), and sandy substrates in coastal areas from shallow waters down to about 90 meters depth. Native to the Mediterranean Sea, the Black Sea, and the eastern Atlantic Ocean from the Bay of Biscay down to Cape Verde.
Behavior
Generally forms small groups or schools, though larger adults can be more solitary. It is an active diurnal swimmer, constantly foraging near the substrate and among seagrass beds.
Diet
Omnivorous, feeding primarily on small benthic invertebrates such as crustaceans, mollusks, worms, as well as various types of algae and plant matter.
Reproduction
Gonochoristic or rudimentary hermaphroditic tendencies depending on population dynamics, reproducing through broadcast spawning in coastal waters during the spring and summer months. Eggs and larvae are pelagic.
Ecological role
Acts as both a predator of small benthic invertebrates and a consumer of algae, helping to regulate benthic populations and contributing to energy transfer within coastal and seagrass ecosystems.
Similar species
Other members of the genus Diplodus, such as the two-banded seabream (Diplodus vulgaris) and the white seabream (Diplodus sargus). The annular seabream is easily distinguished from them by the prominent dark ring or spot on the caudal peduncle and the absence of vertical black bars on the body.
Identification tips
Look for the silvery oval body, large dark eye, and most importantly, the dark ring or spot located right before the tail fin on the upper part of the caudal peduncle.
Interesting facts
Like many members of the Sparidae family, annular seabreams possess strong, human-like molariform teeth in the back of their jaws designed for crushing the hard shells of mollusks and crustaceans.