Damselfish

Pomacentridae

Feisty little reef residents, from the iconic clownfish sheltering in anemones to Mediterranean damselfish guarding their algae patches. Don't be surprised if a tiny one charges your mask — they're famously territorial.

Last updated April 2026

Species

Clownfish

Amphiprion bicinctus(20 photos)
Least ConcernUp to 14 cm130mCoral reef

The iconic Red Sea two-band anemonefish — bright orange-yellow with two white bars outlined in black. Smaller and feistier than its Pacific relatives.

Aggressively guards its host anemone, darting at divers' masks and cameras — surprisingly bold for its size.

Bubble-tip anemone, Clownfish

© Jouni Kuisma

Clownfish

© Jouni Kuisma

Bubble-tip anemone, Clownfish

© Jouni Kuisma

Clownfish

© Jouni Kuisma

Clownfish

© Jouni Kuisma

Bubble-tip anemone, Clownfish

© Jouni Kuisma

Bubble-tip anemone, Clownfish

© Jouni Kuisma

Clownfish, Sea anemone

© Jouni Kuisma

Clownfish

© Jouni Kuisma

Clownfish

© Jouni Kuisma

Clownfish

© Jouni Kuisma

Clownfish

© Jouni Kuisma

Bubble-tip anemone, Clownfish

© Jouni Kuisma

Clownfish

© Jouni Kuisma

Clownfish

© Jouni Kuisma

Clownfish

© Jouni Kuisma

Mediterranean chromis

Chromis chromis(8 photos)
Least ConcernUp to 15 cm240mRocky reefPosidonia

A small, uniformly dark brown to black fish with a slightly forked tail. The most abundant fish on Mediterranean rocky reefs — impossible to miss.

Forms dense clouds above rocky reefs, feeding on plankton in mid-water — juveniles are electric blue and much easier to spot.

Mediterranean chromis

© Jouni Kuisma

Mediterranean chromis

© Jouni Kuisma

Mediterranean chromis

© Jouni Kuisma

Mediterranean chromis, Mediterranean moray eel

© Jouni Kuisma

Mediterranean chromis

© Jouni Kuisma

Mediterranean chromis

© Jouni Kuisma

Mediterranean chromis, Trumpet anemone

© Jouni Kuisma

Mediterranean chromis

© Jouni Kuisma

Canary damselfish

Abudefduf luridus(2 photos)
Least ConcernUp to 15 cm125mRocky reef

A stocky, dark damselfish with a blunt head, found in Canary Islands and Macaronesian waters. Dusky grey-brown body, sometimes with faint vertical bars.

Territorial on rocky reefs, often seen chasing other fish away from its algae patch.

Canary damselfish

© Jouni Kuisma

Canary damselfish

© Jouni Kuisma

Half-and-half chromis

Chromis dimidiata(1 photos)
Least ConcernUp to 9 cm235mCoral reef

Recognize it by the sharp color split — dark brown upper body and bright white lower half. A common Red Sea damselfish found near branching corals.

Hovers in small groups just above coral heads, retreating into branches when threatened.

Half-and-half chromis

© Jouni Kuisma

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