Como identificar Arctic Char

Para identificar Arctic Char (Salvelinus alpinus), observe estas características principais.

Características físicas

Formato do corpo

torpedo

Coloração

Highly variable depending on habitat, age, and reproductive state. Generally, the back is dark olive to brown, fading to silvery sides and a white belly. During spawning, males develop brilliant red, orange, or yellow bellies and fins, often with distinct white leading edges on the pectoral, pelvic, and anal fins. Non-spawning fish may have pale spots (pink, red, or yellow) on their sides. Anadromous forms are typically more silvery.

Tipo de escama

cycloid

Posição da boca

terminal

Características distintivas

Absence of teeth on the shaft of the vomer (a key differentiator from trout and salmon), Small, embedded scales that are often difficult to see, Adipose fin present, Forked caudal fin, Often exhibits vibrant spawning coloration, particularly in males

Nadadeira dorsal

Single dorsal fin, typically with 10-14 rays.

Nadadeira caudal

Moderately forked caudal fin.

Nadadeira peitoral

Paired pectoral fins, often with white leading edges during spawning.

Nadadeiras características

Adipose fin present between the dorsal and caudal fins, characteristic of salmonids. Pelvic and anal fins also often show white leading edges in spawning individuals.

Dicas de identificação

1. 1

   Vomerine Teeth

   Unlike true trout (Oncorhynchus) and Atlantic salmon (Salmo salar), Arctic Char typically lack teeth on the shaft of the vomer bone in the roof of the mouth. This is a crucial diagnostic feature.

2. 2

   Coloration and Spots

   Observe the body coloration and spots. Arctic Char often have pale (pink, red, yellow) spots on a darker background, especially when not spawning. Spawning males develop intense red/orange bellies and white leading edges on fins.

3. 3

   Scale Size

   Arctic Char have very small, embedded scales that are often difficult to discern, giving them a smooth appearance compared to other salmonids.

4. 4

   Fin Edges

   Look for the distinct white leading edges on the pectoral, pelvic, and anal fins, particularly prominent in spawning individuals.

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