How to Identify Brown Chromis

To identify Brown Chromis (Chromis multilineata), look at these key features.

Physical Characteristics

Body shape

compressed

Coloration

The body is typically olive-brown to grayish-brown, often with a lighter ventral side. Some individuals may exhibit a yellowish or greenish tinge, particularly on the fins. A distinguishing feature is the presence of a dark spot at the base of the pectoral fin and a dark margin on the caudal fin lobes. The scales often have iridescent centers, creating a subtle sheen. Juveniles may have more pronounced yellow or blue coloration.

Scale type

ctenoid

Mouth position

terminal

Distinctive features

Dark spot at the base of the pectoral fin, Dark margin on the upper and lower lobes of the caudal fin, Often a pale or whitish streak along the lateral line, particularly noticeable in some lighting conditions or when stressed., Small, terminal mouth.

Dorsal fin

Single dorsal fin with 12-13 spines and 11-12 soft rays. The spinous portion is continuous with the soft-rayed portion.

Tail fin

Forked caudal fin with distinct dark margins on the upper and lower lobes.

Pectoral fin

Pectoral fins are clear to yellowish, with a prominent dark spot at their base.

Distinctive fins

Anal fin with 2 spines and 11-12 soft rays. Pelvic fins are typically clear or slightly yellowish.

Identification Tips

1. 1

   Pectoral Fin Spot

   Look for a distinct dark spot at the very base of the pectoral fin. This is a key diagnostic feature.

2. 2

   Caudal Fin Margins

   Observe the caudal (tail) fin. The upper and lower lobes typically have dark, often blackish, margins.

3. 3

   Body Coloration

   While variable, the overall olive-brown to grayish-brown body color, often with subtle iridescence, is characteristic. Avoid confusing with more brightly colored chromis species.

4. 4

   Schooling Behavior

   Brown Chromis are almost always observed in schools, often numbering in the hundreds, feeding in the water column above the reef.

Explore Brown Chromis