Como identificar Bacalhau-da-Antártida

Para identificar Bacalhau-da-Antártida (Notothenia coriiceps), observe estas características principais.

Características físicas

Formato do corpo

torpedo

Coloração

Dorsally dark brown to black, fading to lighter brown or grey on the flanks and ventral surface. Fins are typically dark, often black, especially the pectoral and dorsal fins, giving rise to the common name 'blackfin notothen'. Irregular blotches or bands may be present on the body.

Tipo de escama

cycloid

Posição da boca

terminal

Características distintivas

Robust body with a large head (approximately 30-35% of standard length)., Large eyes., Two dorsal fins: the first short and spiny, the second long and soft-rayed., Prominent pectoral fins., Absence of scales on the head and anterior part of the body in some individuals, or cycloid scales embedded in thick skin., Lateral line system typically consists of two or three lines, often with ossified tubules.

Nadadeira dorsal

Two dorsal fins: D1 (spiny) with 4-7 spines; D2 (soft-rayed) with 35-40 rays. The first dorsal fin is short, while the second is long, extending almost to the caudal fin.

Nadadeira caudal

Caudal fin truncate to slightly emarginate, with 12-14 branched rays.

Nadadeira peitoral

Large and rounded, with 20-25 rays, often dark or black.

Nadadeiras características

Pelvic fins jugular, positioned anterior to the pectoral fins, with 1 spine and 5 soft rays.

Dicas de identificação

1. 1

   Body Shape and Coloration

   Look for a robust, torpedo-shaped body with a dark brown to black dorsal coloration fading to lighter shades ventrally. Irregular blotches may be present.

2. 2

   Head and Eyes

   Note the large head and prominent eyes, characteristic of many Antarctic fish.

3. 3

   Dorsal Fins

   Observe the two distinct dorsal fins: a short, spiny first dorsal and a much longer, soft-rayed second dorsal.

4. 4

   Pectoral Fins

   The large, often dark or black pectoral fins are a key identifier, contributing to its 'blackfin' common name.

5. 5

   Scales

   Feel for cycloid scales, which may be embedded in thick skin, particularly on the head and anterior body where scales might be absent or difficult to discern.

Explore Bacalhau-da-Antártida