How to Identify Catla

To identify Catla (Catla catla), look at these key features.

Physical Characteristics

Body shape

compressed

Coloration

Dorsal side is dark grey to bluish-grey, fading to silvery on the flanks and belly. Fins are generally dusky.

Scale type

cycloid

Mouth position

superior

Distinctive features

Very large head, constituting about 30-35% of the standard length., Prominent, upturned mouth with a thick, non-fringed lower lip., Absence of barbels., Large, cycloid scales., Deep body, laterally compressed.

Dorsal fin

Single, high dorsal fin with 13-14 branched rays. Originates slightly anterior to the pelvic fin origin.

Tail fin

Deeply forked caudal fin.

Pectoral fin

Long, extending almost to the pelvic fin origin.

Distinctive fins

All fins are generally dusky, without prominent markings.

Identification Tips

1. 1

   Head Size

   Look for a disproportionately large head compared to its body size, a key distinguishing feature.

2. 2

   Mouth Position

   Observe the distinctly upturned mouth, indicating its surface-feeding habit.

3. 3

   Barbels

   Note the complete absence of barbels, which differentiates it from many other carp species.

4. 4

   Body Depth

   Its deep, laterally compressed body is also a good indicator.

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