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Paraplotosus butleri ia a lives mainly hidden in reef holes or can be found under large rocks.
Paraplotosus butleri differs from Paraplotosus albilabris and Paraplotosus muelleri in having a high, sail-like first dorsal fin and extremely long nasal barbels that extend backwards to the basal third of the pectoral fin or beyond.
The coral catfish is endemic to Shark Bay (Shark Bay), a bay on the west coast of Australia, up to Torres Strait, Queensland.
Etymology: The species is named in honor of W. 'Harry' Butler, who helped collect many paratypes.