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Del from philly

What are those holes under the smallies jaw?

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Those are mandibular pores.  They house the mandibular nerve.  Used to help locate and ID prey.  They work in conjunction with the lateral line.  I assume they help detect movement below the fish, like prey on the bottom.

They are often used as one way to ID a pike from a large pickerel.  Pike have a minimum of 7 and Pickerel usually have 5, sometimes 6.  Scales on gill plate are another way to differentiate between the 2.  A pike only has scales on the top half of the plate where a Pickerel has a fully covered plate.

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Those are mandibular pores.  They house the mandibular nerve.  Used to help locate and ID prey.  They work in conjunction with the lateral line.  I assume they help detect movement below the fish, like prey on the bottom.

They are often used as one way to ID a pike from a large pickerel.  Pike have a minimum of 7 and Pickerel usually have 5, sometimes 6.  Scales on gill plate are another way to differentiate between the 2.  A pike only has scales on the top half of the plate where a Pickerel has a fully covered plate.

so largies have em too and i never noticed?

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