When an uplift pushes a batholith or smaller body of hardened magma toward the surface. And sometimes when magma fails to reach the surface it hardens in to rock. Over time, the forces that wear away Earth's surface such as flowing water, ice, or wind-may strip away the layers above the hardened magma and finally expose it.
Deciding if a trout is a sea trout or a brown trout can be easy if the sea trout is fresh run from the sea âsea trout are distinctively silvery in colour and may still carry sea lice. However, once they have been in fresh water for a while they return to brown trout colours.
This, of course is a general rule. An example to the contrary is during spring when large trout infiltrate the coastal waters to waylay shrimp. Adroit surf and bay anglers have often resorted to live minnows or shrimp to catch trout under three pounds. While on the other hand, live baitfish like croaker, mullet, pinfish and pogies are used to catch the larger, yellow-mouth trout up to 9 pounds in offshore waters.