How to Identify Red River Shiner

To identify Red River Shiner (Notropis bairdi), look at these key features.

Physical Characteristics

Body shape

elongated

Coloration

Overall silvery, often with a dusky to faint lateral stripe extending from the opercle to the caudal fin base. The back is typically olive to brownish, fading to silvery white on the belly. Fins are hyaline (clear) to slightly dusky.

Scale type

cycloid

Mouth position

subterminal

Distinctive features

Slender body, Moderately pointed snout, Small, subterminal mouth, Typically 7 anal fin rays, Lateral line usually complete

Dorsal fin

Single dorsal fin, typically with 8 rays, originating slightly behind the pelvic fin origin.

Tail fin

Forked caudal fin.

Pectoral fin

Pectoral fins are relatively short.

Distinctive fins

Pelvic fins are abdominal.

Identification Tips

1. 1

   Body Shape and Coloration

   Look for a slender, silvery body with a faint lateral stripe. The back is usually darker, olive to brownish.

2. 2

   Mouth Position

   The mouth is small and subterminal, meaning it's located slightly below the tip of the snout.

3. 3

   Fin Ray Count

   A key diagnostic feature is the typical count of 7 anal fin rays. This often requires careful examination.

4. 4

   Geographic Location

   Its presence is restricted to the Red River basin, which helps narrow down identification.

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