Come identificare Coho Salmon

Per identificare Coho Salmon (Oncorhynchus kisutch), osserva queste caratteristiche chiave.

Caratteristiche fisiche

Forma del corpo

torpedo

Colorazione

Ocean-phase Coho salmon are typically bright silver on their sides, with a darker blue-green back. They have small, irregular black spots on their back and the upper lobe of their caudal fin. During spawning, males develop a reddish-maroon coloration on their sides, a dark back, and a pronounced kype (hooked snout). Females also darken and may show some reddish hues.

Tipo di squame

cycloid

Posizione della bocca

terminal

Caratteristiche distintive

Small, irregular black spots on the back and upper lobe of the caudal fin (tail fin)., White gums at the base of the teeth, with black pigment along the gum line of the lower jaw (distinguishes from Chinook)., Relatively small eye compared to body size., Spawning males develop a pronounced kype (hooked snout) and a reddish body coloration., Average adult size: 60-75 cm (24-30 inches) in length, 3.5-5.5 kg (8-12 lbs) in weight. Can reach up to 108 cm (42 inches) and 15 kg (33 lbs).

Pinna dorsale

Single dorsal fin, relatively tall, with 10-14 rays. Adipose fin present.

Pinna caudale

Moderately forked caudal fin (tail fin), with small, irregular black spots on the upper lobe.

Pinna pettorale

Paired pectoral fins, typically clear or slightly dusky.

Pinne distintive

Anal fin with 12-17 rays. Pelvic fins are paired and located abdominally.

Consigli per l'identificazione

1. 1

   Spots on Tail

   Coho salmon typically have small, irregular black spots primarily on the upper lobe of their caudal fin. Chinook salmon have spots on both lobes.

2. 2

   Gum Line

   Examine the gum line of the lower jaw. Coho salmon have white gums with a black pigment line only at the base of the teeth. Chinook salmon have entirely black gums.

3. 3

   Body Coloration (Ocean Phase)

   Bright silver sides with a dark blue-green back. Less pronounced spotting than Chinook.

4. 4

   Spawning Coloration

   Males develop a distinctive reddish-maroon body and a prominent kype (hooked snout). Females also darken and may show some red.

5. 5

   Eye Size

   Coho salmon generally have a relatively smaller eye compared to their body size than some other salmon species.

Esplora Coho Salmon