How to Identify Korean Minnow

To identify Korean Minnow (Nipponocypris koreanus), look at these key features.

Physical Characteristics

Body shape

elongated

Coloration

Dorsal side is typically olive-brown to grayish, fading to silvery-white on the ventral side. A prominent dark lateral stripe extends from the operculum to the caudal peduncle. Fins are generally translucent, sometimes with a yellowish tint. Breeding males may exhibit reddish coloration on the fins and body.

Scale type

cycloid

Mouth position

terminal

Distinctive features

Prominent dark lateral stripe, Relatively small mouth, Absence of barbels, Small, embedded scales

Dorsal fin

Single, short-based dorsal fin located mid-body, typically with 7-8 branched rays.

Tail fin

Forked caudal fin.

Pectoral fin

Paired pectoral fins, relatively small.

Distinctive fins

Pelvic fins are abdominal. Anal fin is short-based, typically with 6-7 branched rays.

Identification Tips

1. 1

   Lateral Stripe

   Look for the distinct, dark lateral stripe running along the side of the body from the gill cover to the tail base. This is a key distinguishing feature.

2. 2

   Body Shape and Size

   Observe its slender, elongated body and relatively small size, typically reaching up to 10-12 cm (4-5 inches) in total length.

3. 3

   Mouth and Barbels

   Note the small, terminal mouth and the complete absence of barbels, which helps differentiate it from some other cyprinids.

4. 4

   Fin Ray Counts

   For precise identification, count the branched rays in the dorsal fin (typically 7-8) and anal fin (typically 6-7).

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