How to Identify Indian Shortfin Eel

To identify Indian Shortfin Eel (Monopterus indicus), look at these key features.

Physical Characteristics

Body shape

eel-like

Coloration

Generally drab, ranging from olive-brown to dark brown or greyish on the dorsal side, often lighter on the ventral side. Some individuals may exhibit faint mottling or spots.

Scale type

none

Mouth position

terminal

Distinctive features

Absence of pectoral and pelvic fins., Dorsal and anal fins are reduced to low, rayless folds of skin., Gill openings are confluent, forming a single, transverse slit on the ventral side of the head., Eyes are small and often covered by skin in larger individuals., Possesses accessory respiratory organs, allowing it to breathe atmospheric air.

Dorsal fin

Reduced to a low, rayless fold of skin, continuous with the caudal fin.

Tail fin

Rounded or pointed, continuous with the dorsal and anal fins.

Pectoral fin

Absent.

Distinctive fins

Pelvic fins are also absent. The median fins (dorsal, caudal, anal) are continuous, forming a single fin fold around the posterior part of the body.

Identification Tips

1. 1

   Body Shape

   Elongated, snake-like body without scales.

2. 2

   Fins

   Absence of pectoral and pelvic fins. Dorsal and anal fins are reduced to low folds, continuous with the caudal fin.

3. 3

   Gill Opening

   A single, transverse, ventral gill opening, rather than two separate lateral openings.

4. 4

   Eyes

   Small eyes, often partially or fully covered by skin.

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