How to Identify Yellowfin Fairy Wrasse

To identify Yellowfin Fairy Wrasse (Cirrhilabrus flavidorsalis), look at these key features.

Physical Characteristics

Body shape

elongated

Coloration

Males typically exhibit a vibrant yellow to orange dorsal region, often extending onto the dorsal fin, contrasting with a purplish-pink to reddish body. The ventral side can be lighter. They may have iridescent blue or green markings on the head and fins, especially during display. Females are generally more subdued, with a reddish-orange to pinkish body and less pronounced yellow on the dorsal area. Juveniles resemble females.

Scale type

cycloid

Mouth position

terminal

Distinctive features

Bright yellow to orange dorsal coloration in males, Often a distinct dark spot or blotch on the anterior dorsal fin in males, Elongated body with a pointed snout, Sexual dichromatism

Dorsal fin

Typically XI spines, 9 soft rays. The anterior spines may be slightly elongated in males, and the fin often displays the characteristic yellow/orange coloration.

Tail fin

Rounded to slightly truncate caudal fin.

Pectoral fin

Transparent to slightly yellowish, relatively small.

Distinctive fins

Pelvic fins are often elongated in males, sometimes with iridescent blue or purple margins. The anal fin typically has III spines and 9 soft rays, often matching the body coloration with iridescent accents.

Identification Tips

1. 1

   Dorsal Coloration

   Look for the prominent yellow to orange coloration on the back and dorsal fin, especially in males. This is a key distinguishing feature.

2. 2

   Body Color

   Observe the purplish-pink to reddish body color, which contrasts with the dorsal yellow. Females are generally more uniformly reddish-pink.

3. 3

   Fin Markings

   Males often have a small, dark spot or blotch on the anterior part of the dorsal fin, and iridescent blue or purple margins on the pelvic fins.

4. 4

   Size

   This is a relatively small species of fairy wrasse, typically not exceeding 7 cm in total length.

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