Como identificar Corvina-de-linha

Para identificar Corvina-de-linha (Menticirrhus americanus), observe estas características principais.

Características físicas

Formato do corpo

elongated

Coloração

Dorsal surface is typically silvery-gray to brownish, often with faint, oblique dusky bars or blotches that may fade after capture. The ventral surface is silvery-white. Fins are generally dusky, sometimes with yellowish tints.

Tipo de escama

ctenoid

Posição da boca

subterminal

Características distintivas

Elongated body, tapering towards the tail., Subterminal mouth with a thick, fleshy upper lip., A single, short, and stout barbel on the chin, which is often difficult to see without close inspection., Absence of a swim bladder, which is characteristic of the genus Menticirrhus and contributes to its demersal lifestyle., First dorsal fin is tall and triangular, with a long spine.

Nadadeira dorsal

Two dorsal fins; the first is tall and triangular with 10-11 spines (usually 10), the third spine being the longest. The second dorsal fin is long and low with 1 spine and 22-27 soft rays.

Nadadeira caudal

Slightly emarginate to truncate, with the upper lobe often slightly longer than the lower.

Nadadeira peitoral

Moderately long and pointed, reaching beyond the tip of the pelvic fins.

Nadadeiras características

Pelvic fins are thoracic, located below the pectoral fins. Anal fin has 2 spines and 7-9 soft rays.

Dicas de identificação

1. 1

   Chin Barbel

   Look for a single, short, and stout barbel on the chin. This is a key distinguishing feature from other croakers, though it can be small and easily overlooked.

2. 2

   Dorsal Fin Spines

   Count the spines in the first dorsal fin (usually 10) and note that the third spine is typically the longest, giving it a characteristic triangular shape.

3. 3

   Body Shape and Coloration

   Observe the elongated body and the silvery-gray to brownish coloration with faint, oblique bars. The absence of a swim bladder means they do not produce drumming sounds like many other sciaenids.

4. 4

   Absence of Swim Bladder

   While not visible externally, the lack of a swim bladder is a defining characteristic of the genus Menticirrhus and explains their bottom-dwelling nature and inability to produce sound.

Explore Corvina-de-linha