How to Identify Channel Darter

To identify Channel Darter (Etheostoma chaneyi), look at these key features.

Physical Characteristics

Body shape

elongated

Coloration

The body is generally light tan to yellowish-brown, with a series of 8-10 dark, often indistinct, lateral blotches or saddles along the sides. The dorsal surface may have 5-7 darker crossbars. Fins are typically clear to slightly dusky, sometimes with faint banding. Breeding males exhibit more intense coloration, with brighter yellow or orange hues, particularly on the fins and ventral surface, and more pronounced dark markings.

Scale type

ctenoid

Mouth position

subterminal

Distinctive features

Slender, elongated body, Small, subterminal mouth, Two dorsal fins, the first spiny and the second soft-rayed, Lateral line complete or nearly complete, Typically 48-55 lateral line scales, Absence of a premaxillary frenum (upper lip not connected to snout)

Dorsal fin

Two dorsal fins; the first with 9-11 spines, the second with 10-13 soft rays. The first dorsal fin is typically lower than the second.

Tail fin

Caudal fin is slightly emarginate to truncate.

Pectoral fin

Pectoral fins are relatively large and fan-shaped, with 13-15 rays.

Distinctive fins

Pelvic fins are thoracic, located beneath the pectoral fins, and are relatively small.

Identification Tips

1. 1

   Body Shape and Size

   Look for a slender, elongated body, typically reaching a maximum standard length of about 5-7 cm (2-2.8 inches).

2. 2

   Coloration and Markings

   Observe the light tan to yellowish-brown base color with 8-10 dark lateral blotches or saddles. Dorsal crossbars may also be present. Breeding males will show more vibrant colors.

3. 3

   Fins

   Note the two distinct dorsal fins, with the first being spiny and the second soft-rayed. The caudal fin is slightly emarginate.

4. 4

   Mouth Position

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

5. 5

   Absence of Premaxillary Frenum

   A key diagnostic feature is the lack of a fleshy bridge connecting the upper lip to the snout, allowing the upper lip to be freely protruded.

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