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Balistoides viridescens

Bloch & Schneider, 1801

Titan Trigger


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Latin name : Balistoides viridescens (Bloch & Schneider, 1801)
Synonyms :
Classification : Balistidae ( Triggerfishes )
Name : Baliste Olivâtre
Baliste à moustache
Baliste titan
Baliste à tête jaune
Name : Titan Trigger
Spotted Triggerfish
Pulonon Matingin
Main identification characters
One of the larger triggerfishes and, in its adult form, a distinctive and decorative fish. The Titan triggerfish follows the normal elongated oval body pattern, a drab yellowish khaki giving the basic underlying colour. The lower jaw area is white, whilst the mouth is outlined by thin pale blue lines overlaying a dark brown "moustache". A thickened and diffuse dark brown stripe runs from the pectoral fins, through the eye-sockets, and forms a skull-cap dotted with yellow to orange spots. The powerful body is covered with large clearly defined scales, each being a mid-brown, but edged with the basic body colour. The caudal peduncle is white, with four horizontal rows of greyish spines. The fins are a pale off-white, edged with black.

Adults generally occur in deep lagoon and outer reef habitats from 5 to at least 40 m. Size : Grows to about 70 cm in length.

It is very wary but has been known to attack divers while protecting its nest.
Possible confusions
Pseudobalistes flavimarginatus
Feeds on sea urchins, coral, crabs and other crustaceans, mollusks and tube worms.
Cycle of life / Reproduction
Oviparous. Juveniles are commonly seen on isolated patch reefs in relatively protected, shallow, sandy, inshore areas.
Interaction with other species
Reports of ciguatera poisoning (ciguatoxic).

Occur in lagoon and seaward reefs.
Geographical distribution
Indo-Pacific: Red Sea south to Delagoa Bay and French Polynesia, Mozambique and east to the Line and Tuamotu islands, north to southern Japan, south to New Caledonia; throughout Micronesia.
Websites :
http://www.fishbase.org/Summary/SpeciesSummary.cfm?genusname=Balistoid [...]
http://www.manband-archive.com/triggers/catalogue/balistoides_viridesc [...]
http://www.uog.edu/marinelab/fish/species_html/balistoides.viridescens [...]

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Data sheet written by Christophe Naslain , 5/11/2002

Updates :
Christophe Naslain - 08/11/2002
Abystrale - 27/08/2006

Add a comment

 Comment from Sylvie
Bien que cette espèce soit parfois considérée comme agressive, celui que j'ai rencontré en Polynésie était très gentil. Il nous a accompagné toute la plongée restant quand même toujours à un bon mètre de la palanquée.
Posted date 6/11/2002 

 Comment from Patrick DELMAS
Sur plongeur international de ce mois ci (novembre 2002)il y a un article sur un baliste olivatre qui a attaqué une plongeuse en la mordant sérieusement au visage!
Posted date 18/11/2002 

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