Depth
Microlipophrys · Bony Fish

Black-headed Blenny

Microlipophrys nigriceps

0-12m
Depth Range
4cm
Max Size
Mediterranean
Distribution
0-12m
Depth Range
4cm
Max Size
Rocky shore
Habitat
Omnivore
Diet
Territorial
Social
LC
IUCN Status
Moderate
Sighting Likelihood
Kingdom Animalia
Phylum Chordata
Class Actinopterygii
Genus Microlipophrys
Species nigriceps

Bony Fish

Identification & Biology

  • IdentificationVery small blenny with a rounded head. Males develop a completely black head during breeding. Body is olive to brown. Lacks the orbital tentacles found on many other blennies.
  • SizeUp to 4.5 cm total length, typically around 3 cm.
  • Social HabitSolitary and territorial. Males guard small patches of rock where eggs are deposited.
  • HabitatRocky intertidal and shallow subtidal zones. Lives in tiny crevices and empty barnacle shells.
  • Depth0 to 10 m, predominantly intertidal to 5 m.
  • Feeds OnAlgae and tiny invertebrates scraped from rock surfaces.
  • DistributionMediterranean Sea. One of several endemic small blennies.
  • DescriptionAn incredibly small blenny that hides in the tiniest crevices and empty barnacle tests. During breeding, the male's head turns completely black, creating a stark contrast with the olive body. One of the most easily overlooked fish in the Mediterranean shallows.

Range

Habitat & Distribution

Found on shallow rocky substrates and in the intertidal zone across the Mediterranean. Occupies very small territories on sunlit rock faces and boulder fields in the first few metres of water.

Where Malta divers have spotted this species

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Sightings are logged by divers using our What Did You See? dive-log tool. View the full live sightings map.

Detail

Preferred Environment

Prefers well-lit rocky surfaces with small holes and crevices in very shallow water. Often overlooked due to its tiny size but common in suitable habitat.

Encounter Tips

Best approached slowly and calmly. Avoid casting shadows directly over the animal. Neutral buoyancy and patience increase encounter success significantly.

Black-headed Blenny species card

Biology

Behaviour & Diet

Feeding Strategy

Grazes on microalgae, tiny invertebrates, and biofilm scraped from rock surfaces within its small home territory.

Micro-grazer

Reproduction

Males guard small nest holes in rocks. Females are attracted by the male's dark head colouration and deposit eggs inside the cavity for the male to tend.

Cavity nester

Behaviour & Defence

Fiercely territorial despite its tiny size. Males will chase away intruders many times their own body length from the nest site.

Aggressively territorial

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Where to Encounter in Malta

Dive sites where Microlipophrys nigriceps may be encountered will be added as sighting data is collected.

IUCN Red List Least Concern

Conservation Status

This species is assessed as Least Concern on the IUCN Red List. Mediterranean populations face ongoing pressure from fishing activity, habitat degradation, and climate-driven changes.

Source: IUCN Red List
diveshack Mediterranean Marine Life guide