Final answer:
Spindle fibers are not found in connective tissue; rather, they are involved in cell division. Connective tissue primarily contains reticular, elastic, and collagenous fibers.
Step-by-step explanation:
The fibers found in connective tissue are primarily of three types: reticular, elastic, and collagenous fibers. Reticular fibers are thin strands of collagen forming a supporting network, elastic fibers are made of elastin providing flexibility, and collagenous fibers offer strength and resistance to stretching. The fiber that would not be found in connective tissue is known as spindle fibers, which are involved in cell division and are not considered a component of the connective tissue matrix.