How to Identify Atlantic Redfish

To identify Atlantic Redfish (Sebastes norvegicus), look at these key features.

Physical Characteristics

Body shape

compressed

Coloration

Typically bright reddish-orange to scarlet on the back and sides, fading to pinkish or whitish on the belly. Some individuals may have darker blotches or stripes, especially when young. The color can intensify with depth.

Scale type

ctenoid

Mouth position

terminal

Distinctive features

Large eyes, adapted for low light conditions in deep water., Prominent, sharp spines on the dorsal, anal, and pelvic fins., A bony ridge below the eye, often with small spines., A relatively large mouth with small, conical teeth., A distinct, often dark, spot on the operculum (gill cover) in some individuals or life stages.

Dorsal fin

Single, long dorsal fin with 14-16 strong, venomous spines anteriorly and 13-16 soft rays posteriorly. A deep notch separates the spiny and soft-rayed portions.

Tail fin

Truncate to slightly emarginate (forked) caudal fin.

Pectoral fin

Large, fan-like pectoral fins with 18-20 rays.

Distinctive fins

Pelvic fins with 1 spine and 5 soft rays. Anal fin with 3 spines and 7-10 soft rays. All fins are typically reddish.

Identification Tips

1. 1

   Coloration

   Its vibrant reddish-orange color is a primary identifier, though intensity can vary.

2. 2

   Eye Size

   Unusually large eyes relative to its head size, indicative of its deep-water habitat.

3. 3

   Spiny Fins

   Presence of numerous sharp, strong spines on the dorsal, anal, and pelvic fins. Count the dorsal spines (14-16) for confirmation.

4. 4

   Lateral Line

   The lateral line is distinct and follows the contour of the body.

5. 5

   Body Shape

   Compressed body, relatively deep, with a large head.

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