Gastropsetta frontalis

FamilyScientific NameAuthorYearCommon Name
ParalichthyidaeGastropsetta frontalisBean1895Shrimp Flounder

Gastropsetta frontalis

Unique Characters: Lateral line distinctly arched above pectoral fin on ocular side and prolonged below inferior eye. Pelvic fins symmetrically or nearly symmetrically placed on either side of midventral line (base of neither pelvic fin on midventral line). Urinary papilla on ocular side. Branched caudal-fin rays 13. Pelvic-fin rays of ocular side in adults longer than rays of blind side. Anterior rays of dorsal fin in adults prolonged beginning with second ray. 3 large, ocellated, dark spots on body; 1 above pectoral fin and 2 at midbody, one above the other, dorsal and ventral to lateral line. Lower-limb gill rakers on first arch 6-9. Dorsal-fin rays 58-65. Origin of dorsal fin well in advance of eyes. Dorsal profile of head smoothly convex. Scales on ocular side cycloid and embedded.

Similar Species:

Occelated Flounder
Ancylopsetta ommata

Three-eye Flounder
Ancylopsetta dilecta

Ancylopsetta ommata
Ocellated flounder – Ancylopsetta ommata

Occelated Flounder Ancylopsetta ommata. Lateral line distinctly arched above pectoral fin on ocular side and prolonged below inferior eye. Pelvic fins symmetrically or nearly symmetrically placed on either side of midventral line (base of neither pelvic fin on midventral line). Urinary papilla on ocular side. Branched caudal-fin rays 13. Pelvic-fin rays of ocular side in adults longer than rays of blind side. Anterior rays of dorsal fin in adults prolonged beginning with second ray. Four large ocellated spots on ocular side; anterior spot above curved portion of lateral line, posterior ocelli arranged in triangle with 2 (one above the other) in midbody and the third located on the lateral line caudally. Lower-limb gill rakers on first arch 6-9. Dorsal-fin rays 62-84. Origin of dorsal fin over or slightly anterior to front of eyes. Dorsal profile of head with a concavity in front of upper eye. Scales on eyed side ctenoid.

Three-eye Flounder Ancylopsetta dilecta. Lateral line distinctly arched above pectoral fin on ocular side and prolonged below inferior eye. Pelvic fins symmetrically or nearly symmetrically placed on either side of midventral line (base of neither pelvic fin on midventral line). Urinary papilla on ocular side. Branched caudal-fin rays 13. Pelvic-fin rays of ocular side in adults longer than rays of blind side. Anterior rays of dorsal fin in adults prolonged beginning with second ray. Three large, ocellated, dark spots on body; arranged in triangular pattern on ocular side, with posterior ocellus on lateral line; no spot above curved portion of lateral line. Lower-limb gill rakers on first arch 6-9. Dorsal-fin rays 62-84. Origin of dorsal fin over or slightly anterior to front of eyes. Dorsal profile of head with a concavity in front of upper eye. Scales on eyed side ctenoid.

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