Updated 24 Feb. 2026
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Protogobius Watson & Pöllabauer 1998 prṓtos (πρῶτος), first; gobius (L.), a fish of small value or a gudgeon, i.e., a goby, allusion not explained, probably referring to a number a primitive (plesiomorphic) characters that demonstrate its position as a basal gobioid

Protogobius attiti Watson & Pöllabauer 1998 in honor of Chief Attiti, one of the Melanesian chiefs of the tribe Goro, who was “quick to recognize the new goby, but stated there was no name for it among the Melanesians” [a noun in apposition without the genitive “i”]

Rhyacichthys Boulenger 1901 rhyac, from rhýax (ῥύαξ), rushing stream or mountain torrent, referring to occurrence of R. aspro in fast-flowing streams; ichthýs (ἰχθύς), fish

Rhyacichthys aspro (Valenciennes 1837) presumably referring to its superficial resemblance to the European percid Aspro apron (=Zingel asper)

Rhyacichthys guilberti Dingerkus & Séret 1992 in honor of entomologist Eric Guilbert, Muséum national d’Histoire naturelle (Paris), who helped collect holotype

Rhyacichthys novaeguineae Boulenger 1903 of Papua New Guinea, where it is endemic