Question

what is/are the distance(s) that Sping Chinok Salmon in the different stages (fry, smolt & juveinile) from where it releases its eggs?

Answer 1

• For spawning Salmon required to be migrated to the rivers- freshwater sources.
• Thus it spends their juveinile stage in rivers
• from the fertilised egg- alveins are produced- which have yolk sac attached to their body, enabling them to get nutrition.
• at this stage, they gullps some amout of air by going to the river surface, to gain more byoyancy by filling swim bladder.
• next is the fry stage, in which they develop fins- which help them in staying constantly in high air currents.
• at this stage, they start consuming small invertebrates, for the nutrition.
• next stage is Parr stage.vertical stripes are visible and grow to a size of 25cm, and 1st smolting occurs.
• upto this stage they are in river.
• The smolt- silvery in colour, now have developed all the adaptations needed for living in sea.- like increased salt regulating mechanisms.
• at this stage, their growth is random- making themselves less assessible to predators.
• grilse- mature salmon, after reaching maturity they go back to the river for spaawning