Remove fromoven and drain on paper towels. Wipe the cobia with a dry towel to remove as much moisture as possible, because oil and water don't mix well.
Cut fish into smaller pieces, about 2 inches long. Pour milk over the fish and let standone hour, turning once or twice.
Drain the fish and discard milk. Mix flour, garlic powder, thyme, salt, and pepper together in a plastic bag. Add fish to the bag one at a time and shake to coatevenly with flour mixture.
Heat oil in a deep-fryer or heavy skillet to 375 degrees F (190 degrees C). Fry the floured cobia strips until golden brown, about 6 minutes. Drain on paper towels or rackbefore serving warm.
Notes
The combination of mildly spicy flour with not too heavy batter yields an extraordinarily crispy texture to the cobia in one bite.