The sand steenbras or striped seabream (''Lithognathus mormyrus'') is a species of marine

fish A fish (: fish or fishes) is an aquatic animal, aquatic, Anamniotes, anamniotic, gill-bearing vertebrate animal with swimming fish fin, fins and craniate, a hard skull, but lacking limb (anatomy), limbs with digit (anatomy), digits. Fish can ...

in the family

Sparidae Sparidae is a family of ray-finned fishes belonging to the order Spariformes, the seabreams and porgies, although they were traditionally classified in the order Perciformes. The over 150 species are found in shallow and deep marine waters in t ...

, colloquially known as the common bastardfish for nipping at the legs of swimmers. It is found in shallow water in the Mediterranean Sea and in the eastern Atlantic Ocean from France to South Africa. It also occurs in the Red Sea and off the coast of Mozambique in the Indian Ocean. The

IUCN The International Union for Conservation of Nature (IUCN) is an international organization working in the field of nature conservation and sustainable use of natural resources. Founded in 1948, IUCN has become the global authority on the status ...

has assessed its conservation status as being of "

least concern A least-concern species is a species that has been evaluated and categorized by the International Union for Conservation of Nature (IUCN) as not being a focus of wildlife conservation because the specific species is still plentiful in the wil ...

Description

The sand steenbras is a moderately deep-bodied fish that can grow to a length of about , with a weight of around ,but a more common size is . Its head is about as long as it is high and its upper profile is slightly convex. The dorsal fin has eleven spines and twelve to thirteen soft rays. The pectoral fin is shorter than the head and has fifteen to seventeen soft rays. The anal fin has three spines and ten to eleven soft rays. The head and body are silver, the body being marked with about fourteen vertical dark bands.

Distribution and habitat

The species is widely distributed in shallow seas at depths down to about . Its range includes the Mediterranean Sea, the Black Sea, the Sea of Azov, the eastern Atlantic Ocean from France southwards to South Africa, the Canary Islands, Madeira, the Cape Verde Islands, the Red Sea and the western Indian Ocean from Mozambique southwards to South Africa. It is found in estuaries and bays over sandy and muddy seabeds and

sea grass Seagrasses are the only flowering plants which grow in marine (ocean), marine environments. There are about 60 species of fully marine seagrasses which belong to four Family (biology), families (Posidoniaceae, Zosteraceae, Hydrocharitaceae and ...

meadows.

Ecology

The sand steenbras feeds mainly on invertebrates which it picks off the seabed. Its diet includes gastropod molluscs,

bivalve molluscs Bivalvia () or bivalves, in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class of aquatic molluscs (marine and freshwater) that have laterally compressed soft bodies enclosed by a calcified exoskeleton consis ...

polychaete worms Polychaeta () is a paraphyletic class of generally marine annelid worms, commonly called bristle worms or polychaetes (). Each body segment has a pair of fleshy protrusions called parapodia that bear many bristles, called chaetae, which are mad ...

crabs Crabs are decapod crustaceans of the infraorder Brachyura (meaning "short tailed" in Greek), which typically have a very short projecting tail-like abdomen, usually hidden entirely under the thorax. Their exoskeleton is often thickened and ha ...

amphipods Amphipoda () is an order (biology), order of malacostracan crustaceans with no carapace and generally with laterally compressed bodies. Amphipods () range in size from and are mostly detritivores or scavengers. There are more than 10,700 amphip ...

copepod Copepods (; meaning 'oar-feet') are a group of small crustaceans found in nearly every freshwater and saltwater habitat (ecology), habitat. Some species are planktonic (living in the water column), some are benthos, benthic (living on the sedimen ...

sea urchins Sea urchins or urchins () are echinoderms in the class Echinoidea. About 950 species live on the seabed, inhabiting all oceans and depth zones from the intertidal zone to deep seas of . They typically have a globular body covered by a spiny p ...

and small fish. It is gregarious and sometimes forms large schools. As a

protandric hermaphrodite A hermaphrodite () is a sexually reproducing organism that produces both male and female gametes. Animal species in which individuals are either male or female are gonochoric, which is the opposite of hermaphroditic. The individuals of many ...

, the sand steenbras starts its adult life as a male and later changes its sex to female. In the Mediterranean Sea it reaches maturity as a male at age two, at a length of about , and changes sex at age four to seven at a length of about . This fish is caught for human consumption throughout most of its range but is not in general a targeted species due to its small size. The

International Union for Conservation of Nature The International Union for Conservation of Nature (IUCN) is an international organization working in the field of nature conservation and sustainable use of natural resources. Founded in 1948, IUCN has become the global authority on the stat ...

has assessed its conservation status as being of "

References

External links

* {{Taxonbar, from=Q2016506

sand steenbras The sand steenbras or striped seabream (''Lithognathus mormyrus'') is a species of marine fish in the family Sparidae, colloquially known as the common bastardfish for nipping at the legs of swimmers. It is found in shallow water in the Mediterra ...

Marine fish of Africa Fish of the East Atlantic Fish of the Mediterranean Sea