PTERELEOTRIS HANAE - (JORDAN & SNYDER, 1901)
Actinopterygii (Class) > Perciformes (Order) > Gobioidei (Suborder) > Microdesmidae (Family) > Ptereleotrinae (Subfamily) > Ptereleotris (Genus)
Blue goby, Blue hana goby, Filament dartfish, Thread-tail dart-goby, Threadfin dartfish, Hanahaze, ハナハゼ,
Ptereleotris hannae (Jordan & Snyder, 1901)
Pteroeleotris hannae (Jordan & Snyder, 1901)
Vireosa hanae (Jordan & Snyder, 1901)
Dorsal spines (total): 7; Dorsal soft rays (total): 24-26; Anal spines: 1; Anal soft rays: 22-25; Vertebrae: 26. Pale blue to light bluish gray in color. Operculum with 2 broad, curved, bright blue bands. 4 to 6 median barbels (like bumps in juveniles). Second spine of second dorsal fin elongated; Caudal fin of adults with trailing filaments; Diagonally elongate red to violet spot usually present on lower base of pectoral fin. Max. length: 12.0 cm TL. Depth range: 3 - 50 m, usually: 6 - 30 m.
Ptereleotris: from Greek, pteron = wing, fin + the Greek name of a fish, eleōtris, found in the swampy waters of the Nile (Egypt); from the Greek, eleios = who lives in the marshes. The name Eleotris appears for the first time in Déipnosophistes, a compilation of anecdotes and quotations from ancient authors, written by a scholar and grammarian Greek, Athenaeus of Naucratis (about 170-223 AD). In 1763, the Dutch naturalist and collector Laurentius Theodorus Gronovius (1730-1777) used this name to designate a new genus of fish. The authorship of the genre escapes him because his work was rejected by the scientific community of the time. The genre should have returned to the doctor, entomologist and naturalist of Italian culture, Giovanni Antonio Scopoli (1723-1788) but the late recognition of his work made him lose the authorship of the name. Today the genus, Eleotris, is attributed to Bloch & Schneider, 1801.
hanae: the name of the Professor Mitsukuri's daughter. Hana, a flower. Numerous specimens have been presented by the Imperial University of Tokyo through Dr. Kakichi Mitsukuri during the Review of the Gobioides fishes of japan by David Starr Jordan and John Otterbein Snyder, of the Leland Stanford Junior University. United States National Museum - Volume: 24 - Date: 1901-09-25.
Original description: Vireosa hanae Jordan & Snyder, 1901 - Type locality: off Misaki, Japan.
Southeastern Indian Ocean, western Pacific: Indonesia east to Samoa, north to Japan, south to Rottnest Island (Western Australia), Sydney (New South Wales, Australia) and New Caledonia.
Inhabits coastal reef slopes. Found over rubble and sand near reefs. Usually seen in pairs occupying the same burrow. It uses burrows made by alpheid shrimps which live in association with gobies of the genus Amblyeleotris, but does not interact with the shrimps. Feeds on zooplanktons.
Ptereleotris rubristigma (Allen, Erdmann & Cahyani, 2012) - Reported from Indonesia (West Papua and Bali), probably widespread in the East Indies and possibly Ryukyu Islands (Japan). The first dorsal of Ptereleotris rubristigma has an elongate second spine in adult males and females, which is lacking in Ptereleotris hanae, regardless of sex or size. Presence of a red spot on the pectoral-fin base and blackish central caudal fin in Ptereleotris rubristigma and a narrow blue stripe on the ventral-posterior body of Ptereleotris hanae.