How to Identify Starry Flounder

To identify Starry Flounder (Platichthys stellatus), look at these key features.

Physical Characteristics

Body shape

flat

Coloration

The eyed side (dorsal) is typically dark brown to olive-green, mottled with darker blotches and irregular white or yellowish spots. The blind side (ventral) is white. Distinctive black and orange or yellow bands are present on the dorsal, anal, and caudal fins.

Scale type

ctenoid

Mouth position

terminal

Distinctive features

Rough, star-like scales (ossifications) scattered over the eyed side, giving it a 'starry' appearance., Alternating black and orange/yellow bands on the dorsal, anal, and caudal fins., Small, asymmetrical mouth., Eyes typically on the right side (dextral), though a significant proportion (up to 50% in some populations) can be left-eyed (sinistral), which is unusual for a right-eyed family (Pleuronectidae).

Dorsal fin

Long, extending from just behind the eye to the caudal peduncle, with 52-67 soft rays. Characterized by prominent black and orange/yellow banding.

Tail fin

Rounded to slightly emarginate, with distinct black and orange/yellow bands.

Pectoral fin

Small and rounded, typically present on both sides.

Distinctive fins

Anal fin is also long, mirroring the dorsal fin, with 38-50 soft rays and similar banding patterns. Pelvic fins are small and thoracic.

Identification Tips

1. 1

   Scales

   Feel for the rough, star-like ossifications on the eyed side. This is the most definitive characteristic.

2. 2

   Fin Coloration

   Look for the distinctive alternating black and orange/yellow bands on the dorsal, anal, and caudal fins.

3. 3

   Eye Placement

   While typically right-eyed, be aware that a significant percentage can be left-eyed, which is unusual for its family but normal for this species.

4. 4

   Lateral Line

   The lateral line is relatively straight over the pectoral fin, with a slight arch anteriorly.

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