Ichthyological Research

, Volume 48, Issue 1, pp 77–81 | Cite as

Rabaulichthys suzukii, a new anthiine fish from Japan

  • Hajime Masuda
  • John E. Randall


Rabaulichthys suzukii is described as a new species of anthiine fish, family Serranidae, from three specimens collected in 5–15 m off the Izu Peninsula, Shizuoka Prefecture, Japan in February 1999 and February 2000. It represents the third species of the genus, the most characteristic feature of which is the very high dorsal fin of the male. R. suzukii is most closely related to R. altipinnis Allen from New Britain, differing in its larger size (to 64.2 mm SL, compared to 45.5 mm for R. altipinnis), higher dorsal fin (29.3% SL, compared to 26.2% for R. altipinnis), lack of a filament on the caudal-fin lobes, 19 pectoral rays (modally 20 in R. altipinnis), 9–10 + 23 gill rakers (8–9 + 21–22 in R. altipinnis), and in color. Because the Izu Peninsula collection sites have been heavily dived for many years, the recent appearance of R. suzukii is believed to the result of transport of postlarvae from a population to the south.

Key words Serranidae Anthiinae Rabaulichthys suzukii Japan 


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Copyright information

© The Ichthyological Society of Japan 2001

Authors and Affiliations

  • Hajime Masuda
    • 1
  • John E. Randall
    • 2
  1. 1.Izu Oceanic Park, 841-1 Futo, Ito, Shizuoka 413-0231, Japan (e-mail:
  2. 2.Bishop Museum, 1525 Bernice St., Honolulu, HI 96817-2704, USA (e-mail:

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