How to Identify Mundu

To identify Mundu (Crenuchus spilurus), look at these key features.

Physical Characteristics

Body shape

elongated

Coloration

Cryptic, typically mottled brown, tan, and black patterns, allowing for excellent camouflage. Males often display more vibrant colors, especially during courtship, with reddish or yellowish tints on fins. A prominent dark spot (ocellus) is usually present at the base of the caudal fin.

Scale type

cycloid

Mouth position

superior

Distinctive features

Elongated, somewhat compressed body, Large, extended dorsal and anal fins in mature males, Prominent dark spot (ocellus) at the caudal fin base, Relatively large eyes, Small, upturned mouth

Dorsal fin

Single dorsal fin, often greatly extended and sail-like in mature males, originating anterior to the anal fin origin. Typically with 2 unbranched and 8-10 branched rays.

Tail fin

Caudal fin is typically rounded to slightly emarginate, with a distinct dark spot (ocellus) at its base.

Pectoral fin

Pectoral fins are relatively small and rounded.

Distinctive fins

Anal fin is also elongated in males, mirroring the dorsal fin's development. Pelvic fins are small and located abdominally.

Identification Tips

1. 1

   Body Shape and Size

   Elongated and somewhat compressed body, reaching a maximum standard length of about 8-10 cm (3-4 inches).

2. 2

   Coloration and Pattern

   Mottled brown/tan/black camouflage patterns. Look for the distinct dark ocellus at the base of the caudal fin.

3. 3

   Fin Development (Males)

   Mature males exhibit significantly elongated and sail-like dorsal and anal fins, which are a key distinguishing feature.

4. 4

   Mouth Position

   Small, upturned mouth, indicative of its surface-feeding and ambush predatory habits.

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