ENNEAPTERYGIUS TUTUILAE - (JORDAN & SEALE, 1906)
Picture courtesy of: Yves Thévenet
Actinopterygii (Class) > Perciformes (Order) > Blennioidei (Suborder) > Tripterygiidae (Family) > Tripterygiinae (Subfamily) > Enneapterygius (Genus)
High hat triplefin, High-hat Triplefin, Rosy-cheek threefin, 隆背双线鳚, 高鳍双线鳚, セグロヘビギンポ,
Dorsal spines (total): 13-16; Dorsal soft rays (total): 7-10; Anal spines: 1; Anal soft rays: 15-20. Identified by the tall first dorsal fin that is white in males. Large individuals may have conspicuous dark spot on upper middle of second dorsal fin connected to a band extending down the sides as well as about 5 darker bars on body and red snout and lower head. Max length: 4.0 cm TL. Depth range: 0 - 55 m.
Body elongate, compressed, scaled; depth of caudal peduncle equal to eye; lower profile of head projecting, the large eyes forming a convexity in the profile, otherwise the profile somewhat rounded to the mouth, angle of mouth under middle of eye; snout rather pointed; minute teeth in jaws; a short simple tentacle over eye and at nostril; first dorsal fin rather high and distinct, its base in front of posterior margin of opercle; base of second dorsal about equal to head, its longest ray 2.5 in head; base of third dorsal 1.75 in head, its longest ray 2.25 in head; origin of anal under sixth spine of second dorsal, its base 2.5 in length of fish without caudal; its origin at equal distance between tip of snout and base of caudal; pectoral slightly greater than length of head; caudal rounded, 1.25 in head;ventral situated anterior of pectoral, its length 1.25 in head.
Ggreenish pinkish, with about 9 dark cross-bars, which become blackish bars across base of anal; a green bar between 2 white ones at base of caudal; fins barred with reddish brown; first and second dorsal blackish; head dotted and mottled with reddish.
Another specimen was translucent yellow white with many fine points, some rose-red, some black-brown, mixed all over body and fins; head darker; the fine spots weakly segregated into transverse bars, more distinct on belly.
Enneapterygius: from Greek, ennea = numeral nine + from Greek, pterygion = little fin.
tutuilae: for the island of Tutuila with its 140 km² is the largest and the main island of American Samoa in the archipelago of Samoan Islands. Four specimens were collected from the reef at Pago Pago, the capital of American Samoa.
Original description: Enneapterygius tutuilae Jordan & Seale, 1906 - Type locality: Pago Pago, American Samoa.
Red Sea, Indo-West Pacific: East Africa, Seychelles, Madagascar and western Mascarenes east to Marshall Islands and Society Islands, north to Ryukyu Islands and southern Japan, south to Western Australia and Queensland, New Caledonia and Samoa.
Adults are found in various reef habitats, but often on sponges or reef outcrops. Also found in intertidal pools and on corals and rocks. They feed on zooplankton. Eggs are hemispherical and covered with numerous sticky threads that anchor them in the algae on the nesting sites. Larvae are planktonic which occur primarily in shallow, nearshore waters. The most common and most widely distributed among Enneapterygius species.
Enneapterygius altipinnis (Clark, 1980) - Reported from Red Sea.