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The current concept of Periophthalmus novemradiatus (Hamilton, 1822) includes two species. Procurement of fresh material and examination of extant type specimens revealed that P. novemradiatus differs from P. variabilis Eggert, 1935, primarily in the number of anal fin rays (I, 12 or 13 vs. I, 10-12); the lateral scale series (62-67 vs. 48-60); the extent(More)
The mudskipper Periophthalmus walailakae is recorded from Singapore, where it was previously misidentified as Periophthalmodon schlosseri, with which it is syntopic. Periophthalmus walailakae is distinguished from its congeners by the following combination of characters: pelvic fins completely united and shaped like a disk, and first dorsal fin dark brown(More)
Partner choice is an important selective force in mutualistic partnerships. Although several aspects of mutualism have been well-studied, partner choice remains a novel aspect in the study of marine mutualists. Previous research on the goby-shrimp mutualism suggested that visual cues affect the ability of gobies to discriminate between potential shrimp(More)
A new species of mudskipper (Gobiidae: Oxudercinae) from northern Australia is described. This species was previously misidentified as P. takita [corrected] Eggert, 1935 . Periophthalmus takita sp. nov. can be distinguished from its congeners by the following suite of characters: modally VIII spines in the first dorsal fin; second dorsal and anal fins with(More)
Walter Bruno Eggert described nine species and fifteen subspecies of the oxudercine genus Periophthalmus in 1929 and 1935. His descriptions were based primarily on specimens collected by Jürgen Wilhelm Harms during several expeditions to South-east Asia and Japan. The whereabouts of many of the type specimens were unknown, and were presumed destroyed during(More)
Interactions between the 120 species of gobies that associate with 13 species of Alpheus shrimps are often overlooked as these species are benthic and subterranean. Gobies act as sentinels at the entrances of burrows excavated and maintained by host shrimps and warn the latter of perceived threats through tactile communication (see Karplus and Thompson 2011(More)
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