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FISH GUIDE · Sea

Surmullet: identification, habitat and fishing guide

Mullus surmuletus

Present a small piece of worm close to soft bottom without entering rock crevices. This indicative approach for striped red mullet still needs local review.

Catalogue names : Rouget-barbet de roche. Forms and names may vary between habitats.

Editorial review : · This species guide is not permission to fish. Read the precautions below and check the current rules for your location before targeting a species. Some species or populations are protected.

Geographical distribution

Documented from western Norway to southern Morocco, around the Canary Islands, in the Mediterranean and Black Sea according to DORIS.

  • Documented presence : Northeast Atlantic
  • Documented presence : Mediterranean Sea
  • Documented presence : Black Sea

Documented areas, not an exhaustive list. Presence in a region does not imply presence in every water body or permission to fish.

Distribution sources

Identification

Mullus surmuletus has two barbels under the chin and bands on its first dorsal fin. Red mullet, Mullus barbatus, have a steeper head profile and an unstriped first dorsal fin. Colour changes: red alone does not identify the species. Compare the head and fin without handling the barbels.

Habitat

Despite its French name referring to rocks, it inhabits soft bottoms, including sand, gravel and seagrass beds, as well as areas near rocks. Choose accessible sand at the edge of a bottom feature without placing bait in the seagrass. Disturbed sediment may indicate activity; it does not by itself identify the fish responsible.

Diet

Adults uncover worms, crustaceans and molluscs in sediment; young fish take small crustaceans among other prey.

Behaviour

Its barbels help it find invertebrates in sediment, particularly worms and small crustaceans. A small bait close to the bottom therefore matches its diet. This biological link does not establish a catch rate. Start with a simple presentation and check the catches; several species may use the same feeding area.

Indicative biological size

15–25 cm fish are the most abundant in diving areas according to DORIS; this context does not cover all deeper grounds and is not a legal size limit.

Fishing context and precautions

  1. Locate permitted soft bottom near a bottom feature and protect the seagrass beds. Prepare a short boat-bottom-fishing session or a gentle cast from shore. Check that the rig can return without crossing a crevice; put fine pliers and a means of landing the fish in place before baiting up.
  2. Rig a terminal weight and just one small, low hook snood. Use a single hook suited to the bait and a hooklength resistant to local abrasion. This arrangement is indicative: finesse must not leave the rig unable to withstand shells or an incidental catch.
  3. Thread on a small piece of marine worm with the point exposed. Place it on the soft margin and tighten the line slightly. Avoid constantly moving the weight or ploughing the substrate. If the bait quickly disappears, check its attachment before concluding you missed a bite.
  4. Take up tension progressively at a clear bite and retrieve without jerking. Land the fish, check its first dorsal fin and head, then decide on the permitted handling of the catch. Check the bait and snood; if very small fish keep coming, move to another area or stop this search.

A distinctive feature

While digging through the bottom, it also uncovers small prey that following fish sometimes take advantage of.

Sources and review

Each reference includes its access date. Overall editorial review: . Local conditions and regulations may change.

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