Symphurus urospilus

FamilyScientific NameAuthorYearCommon Name
CynoglossidaeSymphurus urospilusGinsburg1951Spottail Tonguefish

Symphurus urospilus

Unique Characters: Peritoneum unpigmented. Pupillary operculum well developed. Caudal-fin rays usually 11. Dorsal-fin rays usually less than 104. Anal-fin rays less than 91. Body usually deeper in anterior 1/3 of length and tapering noticeably posteriorly. Teeth present or absent over entire margins of both ocular-side jaws. Large ocellated spot on caudal fin. Dorsal and anal fins without spots.

Similar Species:

Largescale Tonguefish
Symphurus minor

Spottedfin Tonguefish
Symphurus diomedeanus

Symphurus diomedeanus
Spottedfin Tonguefish – Symphurus diomedeanus
Photo Credit: G.W. Link

Largescale Tonguefish Symphurus minor. Peritoneum unpigmented. Pupillary operculum present. Caudal-fin rays usually 10. Dorsal-fin rays usually less than 104. Anal-fin rays less than 91. Body usually deeper in anterior 1/3 of length and tapering noticeably posteriorly. Teeth present or absent over entire margins of both ocular-side jaws. Brown blotch on caudal region of ocular surface of body or single ocellated spot on posterior dorsal and anal fins. No fleshy ridge on ocular-side lower jaw. Ostia present in bases of membranes of dorsal and anal fins.

Spottedfin Tonguefish Symphurus diomedeanus. Peritoneum unpigmented. Pupillary operculum and fleshy ridge on ocular-side lower jaw present. Caudal-fin rays usually 10-12. Dorsal-fin rays usually less than 104. Anal-fin rays less than 91. Body usually deeper in anterior 1/3 of length and tapering noticeably posteriorly. Teeth present or absent over entire margins of both ocular-side jaws. No ocellated spot on caudal fin; if spot present on caudal fin, then spots also present on posterior dorsal and anal fins. No dark brown blotch on caudal region of ocular surface of body. No ocellated spots on posterior dorsal and anal fins. No ostia in membranes at bases of dorsal and anal fins. Posterior dorsal and anal fins spotted (usually).

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