Como identificar Grass Carp

Para identificar Grass Carp (Ctenopharyngodon idella), observe estas características principais.

Características físicas

Formato do corpo

torpedo

Coloração

Dorsal side is typically dark olive to brownish-green, fading to silvery-white on the flanks and belly. Scales often have dark edges, creating a cross-hatched pattern. Fins are generally dusky.

Tipo de escama

cycloid

Posição da boca

terminal

Características distintivas

Elongated, cylindrical body, Large, cycloid scales, Absence of barbels, Short dorsal fin, Pharyngeal teeth specifically adapted for grinding plant material

Nadadeira dorsal

Single, short dorsal fin with 3 unbranched and 7 branched rays.

Nadadeira caudal

Large, deeply forked caudal fin.

Nadadeira peitoral

Relatively short pectoral fins, positioned low on the body.

Nadadeiras características

All fins are rayed, lacking spines. The anal fin is short with 3 unbranched and 8 branched rays.

Dicas de identificação

1. 1

   Body Shape

   Look for an elongated, torpedo-shaped body, characteristic of a fast-swimming fish.

2. 2

   Coloration

   Observe the dark olive to brownish-green back, silvery sides, and white belly. Scales often have a darker outline.

3. 3

   Mouth and Barbels

   Note the terminal mouth and the complete absence of barbels, which distinguishes it from common carp (Cyprinus carpio).

4. 4

   Dorsal Fin

   The dorsal fin is short and lacks a serrated spine, unlike the common carp.

5. 5

   Pharyngeal Teeth

   While not visible externally, their unique comb-like pharyngeal teeth (4-2 or 5-2 formula) are a definitive internal identification feature for ichthyologists, adapted for shredding plant material.

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