How to Identify Moonlight Gourami

To identify Moonlight Gourami (Trichogaster microlepis), look at these key features.

Physical Characteristics

Body shape

compressed

Coloration

Silvery-white to pale green, often with a pearlescent sheen. Fins are typically translucent or slightly yellowish. No distinct markings or patterns.

Scale type

ctenoid

Mouth position

superior

Distinctive features

Long, filamentous, thread-like pelvic fins that act as tactile organs., Labyrinth organ for atmospheric air breathing., Relatively small scales (microlepis means 'small scales')., Upward-pointing mouth.

Dorsal fin

Long and low, extending almost to the caudal fin, with 3-6 spines and 8-11 soft rays.

Tail fin

Rounded to slightly emarginate.

Pectoral fin

Fan-shaped, transparent.

Distinctive fins

Pelvic fins are highly modified into long, sensory filaments, often longer than the body.

Identification Tips

1. 1

   Coloration

   Look for the characteristic silvery-white to pale green body, often with a pearlescent sheen, lacking prominent stripes or spots.

2. 2

   Pelvic Fins

   The most distinctive feature is the pair of extremely long, thread-like pelvic fins, which are used for sensing the environment.

3. 3

   Body Shape

   Observe the laterally compressed, oval-shaped body.

4. 4

   Size

   Adults typically reach a standard length of 12-15 cm (4.7-5.9 inches), with some individuals growing up to 20 cm (7.9 inches).

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