How to Identify Rosyside Dace

To identify Rosyside Dace (Clinostomus funduloides), look at these key features.

Physical Characteristics

Body shape

elongated

Coloration

Dorsal surface is typically olive to dark brown, fading to silvery-white on the belly. A prominent rosy-red to orange lateral stripe extends from the operculum to the caudal peduncle, most intense in breeding males. A dark lateral stripe often underlies the rosy stripe. Fins are generally clear to slightly yellowish, sometimes with reddish tints in breeding individuals.

Scale type

cycloid

Mouth position

superior

Distinctive features

Large, oblique mouth extending to or beyond the anterior margin of the eye., Prominent rosy-red lateral stripe, especially vibrant in breeding males., Slender, elongated body., Small, embedded scales.

Dorsal fin

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

Tail fin

Moderately forked caudal fin.

Pectoral fin

Pectoral fins are relatively long and pointed.

Distinctive fins

All fins are typically clear to slightly yellowish, sometimes with reddish hues during spawning.

Identification Tips

1. 1

   Mouth

   The large, oblique mouth that extends to or beyond the anterior margin of the eye is a key diagnostic feature, distinguishing it from many other dace species.

2. 2

   Lateral Stripe

   The prominent rosy-red to orange lateral stripe is highly characteristic, especially in breeding males. This stripe is typically bordered by a darker stripe below it.

3. 3

   Body Shape

   Its slender, elongated body helps differentiate it from more robust dace species.

4. 4

   Scales

   The scales are relatively small and often appear embedded, giving the fish a smooth appearance.

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