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Relevant synonyms
 Abudefduf cyaneus Quoy & Gaimard, 1825
Glyphisodon azureus Cuvier, 1830
Abudefduf sapphirus Jordan & Richardson, 1908
Misidentification
None
Meristic formula
D1, VIII; D2, 8-9; A, I + 6-8; P, 15-16; V, I + 5; LL, 35-38; GR, 23-31.
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SHORT
DESCRIPTION
Deep and slightly elongated, its depth 2.2-2.4 in standard length. Posterior margin of preopercle smooth. No scales on infraorbitals, cheek with scales. Continuous dorsal fin. Caudal fin round to emarginate. Pectoral fin round. The first ray of pelvic fin the longest.
color :
Bright sapphire blue with a dark stripe running through the eye and across the snout. Female with a black spot at the base of the hindmost dorsal ray, fins are transparent. This species is dichromatic, with distinct colour difference between the adult male and female.
size :
4-7 cm (max. 8.5 cm).
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BIOLOGY / ECOLOGY
Non-migratory species. They occur in groups of a male and several females or juveniles. Feed on algae, pelagic tunicates and copepods. Oviparous, distinct pairing during breeding. Eggs are demersal and adhere to the substrate. Males guard and aerate the eggs.
habitat : Reef-associated at depths of 0 - 10 m. Adults are found amongst rubble and coral of clear sheltered lagoons and subtidal reef flats.
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1st
MEDITERRANEAN RECORD
Slovenia (2013)
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DISTRIBUTION
Worldwide : Indo-West Pacific: eastern edge of the Indian Ocean and Western Australia to New Guinea, New Britain, Solomon Islands, Marianas and Caroline Islands, Indonesia, Philippines, Taiwan and Ryukyu Islands. Also known from Vanuatu and New Caledonia;Palau and Yap in Micronesia; Samoa. Not known in the Red Sea. Mediterranean : Adriatic Mediterranean: Portoroz beach, Slovenia, Northern Adriatic.
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ESTABLISHMENT SUCCESS
Very rare. One specimen was caught, several observed by visual census.
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MODE OF
INTRODUCTION
Possibly transported via ship or released from aquarium.
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IMPORTANCE TO
HUMANS
An important species in aquarium trade.
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KEY
REFERENCES
- Allen, G.R., 1991: Damselfishes of the world. Mergus Publishers, Melle, Germany. 271 p.
- Azzurro, E., Broglio, E., Maynou, F., Bariche, M. 2013: Citizen science detects the undetected: the case of Abudefduf saxatilis from the Mediterranean Sea. Management of Biological Invasions, 4 (2), 167-170.
- Lipej, L., Mavric, M., Dulcic, J., 2014: First record of Chrysiptera cyanea in the Mediterranean Sea. Journal of Applied Ichthyology 30, 1053-1055.
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- Tardent, P. 1959: Capture d'un Abudefduf saxatilis vaigiensis Q. und G. (Pisces, Pomacentridae) dans le Golfe de Naples. Revue Suisse de Zoologie 66, 347–35.
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