Como identificar Olive Flounder

Para identificar Olive Flounder (Paralichthys olivaceus), observe estas características principais.

Características físicas

Formato do corpo

flat

Coloração

Dorsal (eyed) side is typically olive-brown to grayish-brown, often mottled with darker spots and blotches, allowing for excellent camouflage. The ventral (blind) side is pure white. Coloration can change rapidly to match the substrate.

Tipo de escama

ctenoid

Posição da boca

terminal

Características distintivas

Both eyes typically on the left side of the head (sinistral)., Large mouth with sharp, conical teeth., Lateral line is strongly arched above the pectoral fin., Dorsal fin originates anterior to the eyes., Caudal fin is rounded or slightly truncate.

Nadadeira dorsal

Long, extending from the head to the caudal peduncle, with 77-86 soft rays. Originates anterior to the eyes.

Nadadeira caudal

Rounded to slightly truncate, not forked.

Nadadeira peitoral

Well-developed, with the pectoral fin on the eyed side being larger than that on the blind side.

Nadadeiras características

Anal fin is also long, with 59-69 soft rays, mirroring the dorsal fin shape.

Dicas de identificação

1. 1

   Eye Position

   Always check the eye position. Paralichthys olivaceus is sinistral, meaning both eyes are on the left side of the head when viewed from the dorsal surface with the mouth pointing forward. This distinguishes it from dextral flounders (eyes on the right).

2. 2

   Mouth Size and Teeth

   It possesses a relatively large mouth extending to or beyond the anterior margin of the lower eye, armed with prominent, sharp, conical teeth, indicative of its predatory nature.

3. 3

   Lateral Line

   Observe the lateral line, which exhibits a distinct, high arch above the pectoral fin on the eyed side.

4. 4

   Body Shape and Coloration

   Its oval to rhomboid body shape and variable olive-brown to grayish-brown coloration with irregular darker spots and blotches on the eyed side are characteristic. The blind side is uniformly white.

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